Excel in Mathematics Book 1 Final (2078)

Counting and Writing Tens
Re-grouping of Numbers

Let’s learn to regroup numbers into tens and ones.

There are 11 pencils.

There is 1 bundle of 10 pencils and I got it!
1 more pencil. 1 ten and 4 more
is 14!!
1 ten and 1 more is 11.

There are 14 pencils. I understood!
There is 1 bundle of 10 pencils and 2 tens and 5 more
4 more pencils. is 25!!
1 ten and 4 more is 14.

There are 25 pencils.
There are 2 bundles of 10 pencils and
5 more pencils.
2 tens and 5 more is 25.

There are 33 pencils.

There are 3 bundles of 10 pencils and
3 more pencils.

3 tens and 3 more is 33.
1. Let's say and write how many tens, and how many more?

1 212 = more
ten and 13 = ten and more

21 = tens and more 24 = tens and more

35 = tens and more 42 = tens and more

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Counting and Writing Tens

2. Let's say and write how many tens and how many more.
Also, write the numbers and number names.

1a) 1 ten and 5 more is 5

Fifteen

b) tens and more is

c)

tens and more is

d) tens and more is

e) tens and more is
f)
g) tens and more is
h)
tens and more is
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tens and more is

100 Approved by Curriculum Development Centre, Sanothimi, Bhaktapur

Counting and Writing Tens

3. Let's say and write the numbers in the blank spaces as
quickly as possible.

1 ten and 8 more is 18 18 is 1 ten and 8 ones.

2 tens and 7 more is 27 is 2 tens and 7 ones.

3 tens and 6 more is 36 is 3 tens and 6 ones.

5 tens and 3 more is 53 is tens and ones.

8 tens and 8 more is 88 is tens and ones.

4 tens and 1 more is 41 is tens and one.

6 tens and 2 more is 62 is tens and ones.

9 tens and 5 more is 95 is tens and ones.

7 tens and 9 more is 79 is tens and ones.

8 tens and 4 more is 84 is tens and ones.

9 tens and 9 more is 99 is tens and ones.

10 tens and 0 more is 100 is tens and one.

4. Let's match the following:

a) 3 tens and 5 ones 24 I know!
b) 7 tens and 2 ones
c) 2 tens and 4 ones 98 35 = 3 tens and 5 ones
98 = 9 tens and 8 ones

35

d) 9 tens and 8 ones 72 vedanta Excel in Mathematics - Book 1
101
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Place and Place Value

1. Let’s group these pencils and put them in Tens place and
Ones place.

These are 14 pencils. Tens Ones

14 = 1 ten + 4 ones 1 ten 4 ones
= 10 + 4 10 4
Tens
These are 25 pencils. Ones

25= tens + ones 2 tens 5 ones
=+ 20 5
Tens
These are 36 pencils. Ones

36= tens + ones 3 tens 6 ones
=+ 30 6
Tens
These are 43 pencils. Ones

43= tens + ones 4 tens 3 ones
=+ 40 3

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Place and Place Value

2. Let's say and write how many tens and ones. Also, write
their values at tens and ones places.

Tens Ones Tens Ones

1 ten 7 ones tens ones
= 10 ==
=7

Tens Ones Tens Ones

tens ones tens ones
== ==

Tens Ones Tens Ones

tens one tens ones
== ==
Ones Ones
Tens Tens

tens ones = tens ones
== 103 =

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Place and Place Value
3. Let's count the tens and ones. Then, write the number.

Tens Ones Tens Ones

34 tens + ones =

3 tens + 4 ones = 3 4

Tens Ones Tens Ones

tens + ones = tens + one =

Tens Ones Tens Ones

tens + ones = tens + ones =

Tens Ones Tens Ones

tens + ones = 104 tens + ones =

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Place and Place Value

4. Let's count tens and ones. 5. Let's write the correct
Then, circle the correct numbers in the blank
number.
spaces.

64 1 ten + 3 ones = 13

46 1 ten + 7 ones =

54 2 tens + 2 ones =

2 tens + 6 ones =
59 3 tens + 4 ones =
89 3 tens + 9 ones =
69 4 tens + 5 ones =

4 tens + 1 one =

95

5 tens + 8 ones =

59

5 tens + 0 one =

69

6 tens + 3 ones =

88 6 tens + 7 ones =
87 7 tens + 2 ones =

78 7 tens + 5 ones =

8 tens + 6 ones =

87 8 tens + 9 ones =

78 9 tens + 4 ones =

77 9 tens + 8 ones =

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Place and Place Value

6. Let’s count the number of tens and ones. Then, write out
the value of the numbers and add them up.

4 tens + 8 ones 2 tens + 3 ones 5 tens + 7 ones

40 + 8 = 48 += +=

9 tens + 1 one 6 tens + 6 ones 1 ten + 5 ones

+= += +=

7 tens + 2 ones 3 tens + 4 ones 8 tens + 9 ones

+= += 80 + 9 = 89

5 tens + 3 ones 9 tens + 9 ones 4 tens + 6 ones

+= += +=

6 tens + 4 ones 8 tens + 5 ones 7 tens + 2 ones

+= += +=

1 ten + 9 ones 2 tens + 0 one 5 tens + 6 ones

+= 20 + 0 = 20 +=

Listen to your teacher

7. Your teacher says a two-digit number. You should write the
number of tens and ones.

a) Number is . It has tens and ones.

b) Number is . It has tens and ones.

c) Number is . It has tens and ones.

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Place and Place Value

8. Let's say and write number of tens and ones in these

numbers. Write th5e value of the digits at+te5ns and ones.
tens + ones =
25 = 2 20 I understood the

places now!

39 = tens + ones = + In 39, 3 is at tens
place and 9 is at

17 = ten + ones = + ones place!!

48 = tens + ones = +

74 = tens + ones = +
55 = tens + ones =
83 = tens + ones = I also understood!

+ In 74, 7 is at tens

place and 4 is at

+ ones place!!

96 = tens + ones = +

62 = tens + ones = +

9. Let's say and write the values of the digits at tens and ones

0places. Then,write th3e number. = 31 I got it!
= 4 tens + 9 ones
3 tens + 1 one +1 = 40 + 9 = 49!!

6 tens + 8 ones = + =

2 tens + 4 ones = + =

5 tens + 3 ones = + = It's easier!
4 tens + 9 ones = + = 8 tens + 6 ones
9 tens + 4 ones = + = = 80 + 6 = 86!!

7 tens + 5 ones = + =

8 tens + 6 ones = + =
107
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Place and Place Value

Abacus

Let’s use abacus to show tens and ones places of numbers.
Tens Ones This is an abacus.

It has two bars for tens and ones.

The number of beads in tens bar show the number

2 tens 4 ones of tens. The number of beads in ones bar show the
number of ones.

1. Let's say and write the number of tens and ones from the abacus.

Tens Ones Tens Ones Tens Ones
a) b) c)

1 ten 3 ones tens one tens ones
Tens Ones Tens Ones
Tens Ones e) f)
d)

tens ones tens ones tens ones

2. Let's draw beads in the bar to show the number of tens and ones.

a) b) c) d)

2 tens 6 ones 1 ten 4 ones 6 tens 5 ones 5 tens 6 ones
e) f) g) h)

4 tens 1 one 7 tens 2 ones 3 tens 8 ones 8 tens 9 ones

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Place and Place Value

3. Let's say and write how many tens 4. Let's write the number
and ones. Also write the values of the of tens and ones.
digits at tens and ones places. Then, write the place
values.
a) Tens Ones Tens Ones
a) 1 4 1 tens = 10
25 b) 2 7 4 ones = 4

2 tens = 20 tens =

2 tens 5 ones 5 ones = 5

Tens Ones Tens Ones tens = c) 3 8 ones =
ones = tens =
b) 4 2

tens ones

Tens Ones Tens Ones tens = d) 4 3 ones =
ones = e) 5 6
c) 3 6 f) 6 9 tens =
tens = ones =
tens ones ones =
Tens Ones Tens Ones tens =
ones =
d) 5 3
tens =
tens ones

Tens Ones Tens Ones tens = g) 9 6 ones =
ones =
e) 2 4 tens =
109 ones =
tens ones
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Place and Place Value

5. Let’s write the digits at tens and ones places. Then, find
the place value.

1 7 1 ten = 10 a) 7 1

7 ones= 7 tens =
ones =

b) 3 5 c) 5 3

tens = tens =

d) 4 8 ones = e) 8 4 ones =
tens = tens =

f) 4 5 ones = g) 5 4 ones =
tens = tens =

h) 6 2 ones = i) 2 6 ones =
tens = tens =

j) 7 9 ones = k) 9 7 ones =
tens = tens =

ones = 110 ones =

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Counting and Writing Numbers by Tens and Ones

1. Let’s count tens and ones. Then, say and write the numbers
from 11 to 20.

a) 11 f) 16

1 ten and 1 one = 11 ten and ones =

b) 12 g) 17

1 ten and 2 ones = 12 ten and ones =

c) 13 h) 18

1 ten and 3 ones = ten and ones =

d) 14 i) 19

1 ten and 4 ones = ten and ones =

e) 15 j) 20

1 ten and 5 ones = 1 ten and 10 ones=2 tens=20

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Counting and Writing Numbers by Tens and Ones
2. Let’s count tens and ones. Then, say and write the numbers from 21 to 30.

a) 21 f) 26

2 tens and 1 one = 21 tens and ones =

b) 22 g) 27

2 tens and 2 ones = 22 tens and ones =

c) 23 h) 28

2 tens and 3 ones = tens and ones =

d) 24 i) 29

tens and ones = tens and ones =

e) 25 j) 30

tens and ones = 112 3 tens and 0 one = 30

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Counting and Writing Numbers by Tens and Ones
3. Let’s count tens and ones. Then, say and write the numbers from 31 to 40.

a) 31 f) 36

3 tens and 1 one = 31 tens and ones =

b) 32 g) 37

tens and ones = tens and ones =

c) 33 h) 38

tens and ones = tens and ones =

d) 34 i) 39

tens and ones = tens and ones =

e) 35 j) 40

tens and ones = 113 4 tens and 0 one = 40

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Counting and Writing Numbers by Tens and Ones
4. Let’s count tens and ones. Then, say and write the numbers from 41 to 50.

a) 41 f) 46

4 tens and 1 one = 41 tens and ones =

b) 42 g) 47

tens and ones = tens and ones =

c) 43 h) 48

tens and ones = tens and ones =

d) 44 i) 49

tens and ones = tens and ones =

e) 45 j) 50

tens and ones = 114 5 tens and 0 one = 50

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Counting and Writing Numbers by Tens and Ones

5. Let's say and write the numbers as quickly as possible.

5 tens and 1 one = 7 tens and 7 ones =

5 tens and 4 ones = 8 tens and 0 one =

5 tens and 9 ones = 8 tens and 6 ones =

6 tens and 0 one = 8 tens and 9 ones =

6 tens and 3 ones = 9 tens and 1 one =

6 tens and 8 ones = 9 tens and 4 ones =

7 tens and 2 ones = 9 tens and 9 ones =
7 tens and 5 ones =
10010 tens and 0 one =

6. Let's say and write the numbers in tens and ones as quickly
as possible.

52 = tens and ones 73 = tens and ones

55 = tens and ones 76 = tens and ones

58 = tens and ones 82 = tens and ones

61 = tens and one 87 = tens and ones

64 = tens and ones 90 = tens and one

69 = tens and ones 93 = tens and ones

70 = tens and one 98 = tens and ones

It's your time!

7. Let's write any number of tens and ones. Then write the
numbers.

a) tens and ones = b) tens and ones =

c) tens and ones = d) tens and ones =

e) tens and ones = f) tens and ones =

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Skip Counting
Let’s count 2 steps forwards - skip count by 2s

Learning to skip count by 2 means you can count things faster!

Let's count by 1s Let's count by 2s

Which one is the faster count, counting by 1s or by 2s?
1. Let's count by 2s and fill in the missing numbers on the

number lines.

+2 +2 +2 +2 +2

0 1 2 3 4 5 6 7 8 9 10

+2 +2 +2 +2 +2

2 3 4 5 7 9 11

+2 +2 +2 +2 +2
45 7 9 11 13

+2 +2 +2 +2 +2

67 9 11 13 15

It's your time!

2. Let's count the ingers of your two hands, like 1, 2, 3, ... Again count,
like 2, 4, 6, ... Which one is the faster counting?

3. Let's count your friends inside the classroom, like 1, 2, 3, ... Again
count, like 2, 4, 6, ... Which one is the faster counting?

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Skip Counting
4. Let's count the marbles by 2s.

2, , , , , ,
5. Let's count the birds by 2s.

2, , , , , ,
,,,,,

6. Let's count by 2s and write the missing numbers.

2 30 It’s interesting!
4 I will try from 60. So, 60, 62,
64, 66, 68, 70, and so on!!

60

10 It’s fun!
20 I will try from 86, ... 86,
88, 90, 92, 94, 96, 98,
100, ... and so on!!

48

7. Let's count by 2s and write the missing numbers.

5 15 21

13 7 15

5 79 11 21

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Comparison of Numbers
Let’s learn ‘greater than’, ‘less than’ and ‘equal to’.

'<' is the symbol '>' is the symbol
of 'less than'! of 'greater than'!

Less number of apples Grater number of apples It’s easy!
The number that
3 is less than 5. comes before a number is
3<5 smaller.

Fantastic!
The number that comes
after a number is always
greater.

Greater number of apples Less number of apples

18 is greater than 12.
18 > 12

7 is equal to 7 '=' is the symbol
7=7 of 'is equal to'!

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Comparison of Numbers
1. Let's write ‘less’ ‘greater’ or ‘equal’ in the blank spaces?

a) I can remember the symbols!

greater > less 5 > 3
less < greater 3 < 5

b) equal = equal 3 = 3

c)

2. Let's write ‘less than’ ‘greater than’ or ‘equal to’ in the blank spaces.

a) 4 is greater than 2 b) 6 is 8

c) 9 is 9 d) 15 is 12

e) 23 is 32 f) 54 is 45

3. Let’s count, compare, and write the symbol ‘<’, ‘>’ or ‘=’ in the
circle.

a) b)

c) d)

4. Let's put <, > or = sign in the circle.

5. Let’s circle the greatest number and cross the smallest one.

a) 34 43 29 38 b) 37 41 39 44

c) 28 36 27 39 d) 75 57 60 72

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Comparison of Numbers
6. Let's write these numbers in increasing order?

27 18 32 18 38
23 24 38

81 90 73
68 57 84

7. Let's write these numbers in decreasing order?

36 42 31 50 31
50 49 38

65 96 82
77 89 91

8. Let's answer these questions.

a) Father is 27 years old. Mother is 25 years old.
Who is older?
Who is younger?

b) Cost of a chocolate is 12 rupees. Cost of a biscuit is 21 rupees.
Which one is cheaper?
Which one is expensive?

c) There are 34 students in class 1. There are 28 students in class 2.
Which class has more students?
Which class has less students?

It's your time!
9. Let’s write your own numbers at the correct sides of the

symbols.

<> =
>= <

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cfP eg] lahf/] xG' 5 ;wF} hflg/fvfF} .

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Odd and Even Numbers
Let’s learn about odd and even numbers from 1 to 10.

This is 1 apple. These are 2 apples.
It is not a pair of apple. It is a pair of apples.
It is an unpaired apple. 2 is a paired number.
1 is an unpaired number. 2 is an even number.
1 is an odd number.

These are 3 apples. These are 4 apples.
Two apples are in a pair. These are two pairs of apples.
But, one apple is left unpaired. 4 is a paired number.
3 is an unpaired number. 4 is an even number.
3 is an odd number.

These are 5 apples. These are 6 apples.
Four apples are in two pairs. These are three pairs of apples.
But, one apple is left unpaired. 6 is a paired number.
5 is an unpaired number. 6 is an even number.
5 is an odd number.

These are 7 pencils. 122 These are 8 pencils.
7 is an unpaired number. 8 is a paired number.
7 is an odd number. 8 is an even number.

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Odd and Even Numbers

These are 9 pencils. These are 10 pencils.
9 is an unpaired number. 10 is a paired number.
9 is an odd number. 10 is an even number.

Let’s see the digit at ones place and find out whether the number is
odd number or even number.

11 1 is an odd number. So, 11 is also an odd number.

12 2 is an even number. So, 12 is also an even number.

27 7 is an odd number. So, 27 is also an odd number.

36 6 is an even number. So, 36 is also an even number.

Remember! If the digit at ones place of any number is 0 (zero), the number is
always even. 10, 20, 30, 40, 50, ... all are even numbers.

1. Let’s circle each two pictures to make pairs. Then, say and write
whether the number is odd or even.

7 is an odd number. 10 is an number.

13 is an number. 18 is an number.

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2. Let’s see the digit at ones place is even or odd. Then, say and

write whether the number is even or odd.
16 is an even number.
19 is an number.

20 is an number. 25 is an number.

37 is an number. 48 is an number.

63 is an number. 74 is an number.

82 is an number. 91 is an number.

3. Let's say and write whether the given numbers are odd or even
numbers.

1 is an odd number and 2 is an even number.

3 is an odd number and 4 is an even number. Then,

5 is an and 6 is an

7 is an and 8 is an

9 is an and 10 is an

11 is an and 12 is an

13 is an and 14 is an

4. Let's write odd numbers between 10 and 20.

11 , , , , 19
5. Let's write even numbers between 10 and 20.

10 , , , , , 20

It's your time!
6. Let's write any five odd numbers greater than 21.

,,,,

7. Let's write any five even numbers greater than 20.

,,,,

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5Unit More Addition and Subtraction

Drawing time!

Let’s add or subtract as quickly as possible. Then, join the
answer in order and complete the picture.

19 – 8 = 20 + 0 =

28 – 6 = 10 + 9 =

7–4= 9+9=
10 – 6 =
9+8=
8–3= 10 + 6 =
7–1=

9–2= 8+7=
9+5=
10 – 2 =
9–0=

6+4= 7+6=

8+3= 125 10 + 2 =

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More Addition and Subtraction

Let’s have a fun of ‘add 10’ rule!
These are the numbers from 0 to 10.

1. Let's select any two numbers whose sum is 10.

01 2 3 0 + 10 = 10 1+ = 10 2 + = 10
45 6 7 = 10 5 + = 10
8 9 10

3 + = 10 4 +

2. Again, let’s choose your own numbers from 0 to 10 and add them

with 10. It’s my investigation!

0 + 10 = 10 4 + 10 = 8 + 10 = 8 + 10 = 18

1 + 10 = 5 + 10 = 9 + 10 =

2 + 10 = 6 + 10 = 10 + 10 =

3 + 10 = 7 + 10 =

3. At first, let’s make 10. Then, add another number with 10.

1 + 9 = 10 and 10 + 4 = 2+8= and 10 + 7 =

3+7= and 10 + 5 = 4+6= and 10 + 8 =

5+5= and 10 + 9 = 7+3= and 10 + 2 =

4. Let's link the numbers that make 10 first? Then add 10 with another
number.
4 + 5 + 6 = 10 + 5 = 15

10 3 13

6 126 Approved by Curriculum Development Centre, Sanothimi, Bhaktapur

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More Addition

Let’s learn the addition of digits at ones place.

1. Let's say and write the sums as quickly as possible.

2 ones 2 ones
+ 4 ones
+ 3 ones
ones
5 ones

3 ones 3 ones
+ 4 ones + 5 ones

ones ones

4 ones 4 ones
+ 4 ones + 5 ones

ones ones

6 ones 6 ones
+ 2 ones + 3 ones

ones ones

5 ones 5 ones
+ 5 ones + 6 ones

ones ones

7 ones 8 ones
+ 5 ones + 4 ones

ones ones

6 ones 9 ones
+ 8 ones + 7 ones

ones ones

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More Addition

Let’s learn the addition of digits at tens place.

2. Let's say and write the sums as quickly as possible.

2 tens 1 ten
+ 2 tens
+ 3 tens
tens
5 tens

2 tens 3 tens
+ 4 tens + 3 tens

tens tens

4 tens 3 tens
+ 3 tens + 5 tens

tens tens

4 tens 6 tens
+ 5 tens + 4 tens

tens tens

7 tens 5 tens
+ 4 tens + 7 tens

tens tens

6 tens 128 9 tens
+ 8 tens + 6 tens

tens tens

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More Addition
3. Let's add the digits at ones place and tens place separately.

Tens Ones Tens Ones Tens Ones Tens Ones

12 24 35 43
+1 3 +2 2 +1 3
+1 3

25

Tens Ones Tens Ones Tens Ones Tens Ones

52 64 75 80
+3 5 +2 4 +2 3 +1 4

Tens Ones Tens Ones Tens Ones Tens Ones

53 15 47 73
+4 2 +1 4 +3 2 +2 5

Tens Ones Tens Ones Tens Ones Tens Ones

61 16 27 34
+3 7 +8 2 +5 1 +6 5

Tens Ones Tens Ones Tens Ones Tens Ones

40 50 65 70
+3 8 +4 0 +2 0 +2 9

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More Addition

4. Let’s add the numbers and find their sums.

TO TO TO TO TO

12 16 25 29 33
+1 4
+1 5 +1 3 +2 1 +3 0
58
27 +3 1

36 41 47 54
+2 2 +3 5 +4 2 +4 3

62 66 75 72 84
+2 4 +3 0 +2 2 +1 3 +1 4

81 92 94 63 56
+1 6 +5 + 4 +2 5 +4 2

50 60 35 43 72
+4 8 + 7 +2 0 +4 3 +2 4

5. Let’s link the digits at ones and tens places separately and

add them.

14 + 23 = 37 17 + 21 = 38 25 + 31 =

42 + 13 = 54 + 35 = 63 + 22 =

36 + 43 = 71 + 28 = 85 + 11 =
130
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More Addition

Let’s use addition in our real life!

1. Let's read the following problems carefully and answer them.
15 birds
a) There are 15 birds on a tree. When 11 more

birds join them, how many birds are there
11altogether on the tree? + birds

27There are birds altogether. 27 birds

b) There are 24 students in a class and 32 students students
students
in another class. How many students are there + students

altogether in two classes?

There are students altogether.

c) The cost of a book is 43 rupees and the cost rupees
rupees
of a pen is 24 rupees. What is the total cost of + rupees

these two items?

The total cost is rupees.

d) Mother paid 50 rupees to buy some sweets rupees
rupees
and 45 rupees to buy some fruits. How much rupees

money did she pay altogether? +

She paid rupees altogether.

e) Mickey Mouse has 30 red marbles and 27 blue marbles
marbles
marbles. How many marbles does he have

altogether? +

He has marbles. marbles

f) The cost of a chocolate bar is 25 rupees and the rupees
rupees
cost of a packet of cookies is 42 rupees. What is

the total cost of these two items? +

The total cost is rupees. rupees

Approved by Curriculum Development Centre, Sanothimi, Bhaktapur 131 vedanta Excel in Mathematics - Book 1

More Addition

Let’s use addition in our real life!

2. Let's read the following problems carefully and answer them.
15 girls
a) There are 15 girls and 12 boys in a class.

How many students are there altogether in + 12 boys
27 students
27the class? students altogether.

There are

b) Tom has 23 bananas and Jerry has 14 apples. bananas
How many fruits do they have altogether? apples
fruits
They have fruits altogether. +

c) Last Friday, class 1 students visited a zoo. + monkeys
They saw 34 monkeys and 25 deer in deer
the zoo. How many animals did they see animals
altogether? men
women
They saw animals altogether. people
sparrows
d) There are 41 men and 33 women in a hall. + crows
How many people are there altogether in birds
the hall?
rose
There are people in the hall. jasmine
plants
e) There are 52 sparrows and 20 crows on a +
tree. How many birds are there altogether
on the tree?

There are birds on the tree.

f) +
There are 21 rose plants and 36 jasmine
plants in a garden. How many plants are
there in the garden altogether?

There are plants altogether.

vedanta Excel in Mathematics - Book 1 132 Approved by Curriculum Development Centre, Sanothimi, Bhaktapur

More Addition
Shopping Time

Let’s visit ‘Dashain fate!’

1. Let’s read the menu and find the total cost.

a)

b)
c)

d)

Approved by Curriculum Development Centre, Sanothimi, Bhaktapur 133 vedanta Excel in Mathematics - Book 1

More Addition
1. Let’s add ones and regroup into tens and ones.

4 6 10 1

6 5 11 1 1

vedanta Excel in Mathematics - Book 1 134 Approved by Curriculum Development Centre, Sanothimi, Bhaktapur

More Addition
2. Let's add the cubes and regroup into tens and ones.

+=

5 5 10 1ones +
ones = ones = ten

+=
16 ones + 6 ones = 12 ones = 2ten and
ones

+ =

ones + ones = ones = ten and ones
ten and ones
+ =

ones + ones = ones =

+=

ones + ones = ones = ten and ones

3. Let’s add ones and regroup into tens and ones.

Approved by Curriculum Development Centre, Sanothimi, Bhaktapur 135 vedanta Excel in Mathematics - Book 1

More Addition with Carry Over

Let’s add the digits at ones place. Regroup the sum into tens and ones.
Then, carry the tens over the tens place.

Tens Ones 1 1
1
Tens Ones +1

16 16 3 6
8
+1 8 +1 8 4

2 14 3 4

1 ten and 4 ones

1. Let’s carry 1 ten over the tens place and complete the addition.

Tens Ones 1 1 I got it!
3 + 9 = 12
13 Tens Ones 13 I write 2 at ones place

13

3+1 9 and I carry 1 ten over the
2 12 2 23+1 9 +1 9 tens place!!

Tens Ones Tens Ones I also learned!
5 + 8 = 13
15 15 15 I write 3 at ones place
+2 8 and I carry 1 ten over the
+2 8 +2 8 tens place!!

Tens Ones Tens Ones So easy!
7 + 9 = 16
27 27 27 I write 6 at ones place and
+3 9 I carry 1 ten over the tens
+3 9 +3 9 place!!

Tens Ones Tens Ones I can do it!
4 + 8 = 12, I write
34 34 34 2 at ones place and
+4 8 I carry 1 ten over
+4 8 +4 8 the tens place!!

vedanta Excel in Mathematics - Book 1 136 Approved by Curriculum Development Centre, Sanothimi, Bhaktapur

More Addition with Carry Over
2. Let's add carrying 1 ten over the tens place.

12 14 16 15 17
+1 8 +1 7 +1 9 +1 6 +1 8

23 25 28 26 29
+1 7 +1 9 +2 7 +2 8 +2 3

34 37 39 36 38
+1 8 +1 6 +2 5 +2 9 +3 3

46 45 48 47 49
+1 9 +2 7 +3 6 +4 7 +4 4

57 68 59 76 85
+2 6 +1 8 +3 5 +1 9 +4 7

Approved by Curriculum Development Centre, Sanothimi, Bhaktapur 137 vedanta Excel in Mathematics - Book 1

More Addition with Carry Over
Let’s use addition in our real life!

3. Let's read the following problems carefully and answer them.

a) Sunayana has 36 sweets. Bishwant gives her 3 684 sweets
18 more sweets. How many sweets does she sweets
have now? +51 sweets

She has sweets.

b) 24 children are playing in the ground. If 16 children
more children join them, how many children children
are there in the ground now? children

There are children in the ground now.

c) The cost of a box is 38 rupees and the cost of rupees
book is 55 rupees. What is the total cost of rupees
these two items? rupees

The total cost is rupees.

d) There are 47 goats and 48 sheep in a farm. goats
How many animals are there altogether in the sheep
animals
farm?

There are animals altogether.

e) Father pays 67 rupees for Mo:Mo and 26 rupees
rupees for an ice-cream. How much money rupees
does father pay altogether? rupees

Father pays rupees.

f) Mother spends 55 rupees to buy some potatoes rupees
and 35 rupees to buy some tomatoes. How rupees

much money does she spend altogether?

She spends rupees altogether. rupees

vedanta Excel in Mathematics - Book 1 138 Approved by Curriculum Development Centre, Sanothimi, Bhaktapur

More Subtraction
Game Time!

Let’s do subtraction inside the balloons. Join the answers to
the children with the same number then fly the balloons.

7–3 10 – 8 5–2
= = =

9–3 8–5 9–7 8–1
= = = =

8–4 10 – 3
= =

10 – 4 6–2 7–5 9–6
= = = =

Approved by Curriculum Development Centre, Sanothimi, Bhaktapur 139 vedanta Excel in Mathematics - Book 1

More Subtraction
Let’s learn the subtraction of digits at Ones place.
1. Let's take away the dots in the circle. Then, say and write

how many dots are left.

1

2. Let's subtract. Say and write the answers as quickly as

possible.

1a) 2 ones – 1 one = one b) 3 ones – 1 one = ones

c) 4 ones – 3 ones = one d) 5 ones – 3 ones = ones

e) 7 ones – 4 ones = ones f) 8 ones – 4 ones = ones

g) 9 ones – 6 ones = ones h) 10 ones – 7 ones = ones

vedanta Excel in Mathematics - Book 1 140 Approved by Curriculum Development Centre, Sanothimi, Bhaktapur

More Subtraction

Let’s learn the subtraction of digits at Tens place.

3. Let's take away the bundles of 10 pencils in the circle. Then,
say and write how many bundles of tens are left.

2 tens 3 tens

– 1 ten – 1 ten
tens
1 ten

4 tens 5 tens
– 2 tens – 3 tens

tens tens

6 tens 7 tens
– 3 tens – 4 tens

tens tens

8 tens 9 tens
– 6 tens – 4 tens

tens tens

4. Let's subtract. Say and write the answers as quickly as

1possible. ten b) 4 tens – 1 ten = tens

a) 3 tens – 2 tens =

c) 5 tens – 2 tens = tens d) 6 tens – 5 tens = ten

e) 7 tens – 3 tens = tens f) 8 tens – 4 tens = tens

g) 9 tens – 7 tens = tens h) 10 tens – 6 tens = tens
141
Approved by Curriculum Development Centre, Sanothimi, Bhaktapur vedanta Excel in Mathematics - Book 1

More Subtraction

5. Let's subtract the digits at ones place and tens place
separately.

Tens Ones Tens Ones Tens Ones Tens Ones

27 39 4 6 5 8

–5 –2 – 3 – 7

22

Tens Ones Tens Ones Tens Ones Tens Ones

63 75 84 99

–1 1 –2 4 –3 4 –4 6

Tens Ones Tens Ones Tens Ones Tens Ones

78 87 95 68

–5 2 –5 6 –6 3 –4 5

Tens Ones Tens Ones Tens Ones Tens Ones

59 48 77 85

–3 8 –1 4 –4 3 –2 2

Tens Ones Tens Ones Tens Ones Tens Ones

70 80 99 68

–4 0 –6 0 –5 0 –2 0

vedanta Excel in Mathematics - Book 1 142 Approved by Curriculum Development Centre, Sanothimi, Bhaktapur

More Subtraction
6. Let’s subtract the numbers and find their differences.

16 18 24 37 45
–7 – 1 –1 3 –2 2
1– 24

57 69 72 88 96
–1 5 –3 3 –2 1 –3 6 –5 0

83 97 49 64 75
–6 0 –7 5 –3 7 –1 1 –4 3

98 36 55 86 27
–2 3 –2 5 –4 5 –8 1 –2 0

60 70 84 69 97
–3 0 –5 0 –7 0 –1 0 –6 0

7. Let’s link the digits at ones and tens places separately and
subtract them.

25 – 13 = 12 27 – 12 = 36 – 16 =

48 – 25 = 54 – 23 = 69 – 35 =

83 – 42 = 78 – 54 = 92 – 62 =

Approved by Curriculum Development Centre, Sanothimi, Bhaktapur 143 vedanta Excel in Mathematics - Book 1

More Subtraction

Let’s use subtraction in our real life!

8. Let's read the following problems carefully and answer

them. 28
5
a) There are 28 students in a class. 5 of them are –
absent today. How many students are present 23
today?

23 students are present.

b) You have a 50 rupees note. You spend 20 rupees

to buy some sweets. How many rupees are left

with you now? –

rupees are left.

c) There are 37 children playing in the ground and
13 of them are boys. How many of them are girls?

–

of them are girls.

d) There are 96 people in a hall. 34 of them are –
women. How many of them are men?

of them are men.

e) There are 44 passengers in a bus. 12 of them get –
off at a place. How many passengers are left in
the bus?

passengers are left.

f) Mother has 95 rupees. She spends 65 rupees to
buy some vegetables. How many rupees are left

with her now? –

rupees are left.

vedanta Excel in Mathematics - Book 1 144 Approved by Curriculum Development Centre, Sanothimi, Bhaktapur

More Subtraction - with Borrowing

Let’s learn subtraction with borrowing 1 ten.

These are two bundles of 10 Let’s take away 5 pencils from
pencils and 3 more pencils. 23 pencils.

–

23 pencils Now, 5 pencils are taken away
from 13 pencils.
One bundle of 10 pencils is
borrowed to 3 pencils.

one bundle of 10 One bundles of 13 pencils
pencils and 3 pencils 10 pencils is left

TO There are 18 pencils left.
1 13
I borrow 1 ten from
2 tens to 3 ones!

23 One bundle of 10 pencils and 8 pencils.
–5
18

1. Let’s borrow one bundle of 10 pencils to ones place, then

subtract. TO

From take away 4 pencils. 1 11

1 7= pencils are left. 21

–1 74

From take away 6 pencils. TO
= pencils are left. 1 14

24
–6

Approved by Curriculum Development Centre, Sanothimi, Bhaktapur 145 vedanta Excel in Mathematics - Book 1

More Subtraction - with Borrowing

From take away 5 pencils. TO
From = pencils are left. 2 12
From
From 32
–5

take away 7 pencils. TO
= pencils are left.
43
–7

take away 8 pencils. TO
= pencils are left.
55
–8

take away 7 pencils. TO
= pencils are left.
35
–7

From take away 4 pencils. TO
= pencils are left.
40
–4

vedanta Excel in Mathematics - Book 1 146 Approved by Curriculum Development Centre, Sanothimi, Bhaktapur

More Subtraction - with Borrowing
2. Let’s borrow 1 ten from tens place to ones place, then subtract.

TO TO TO TO
1 13
26 31 35
23 –8 –9 –7
–5
18

TO TO TO TO
3 10 4 10
30 60
40 50 –1 5 –2 4
–1 3
3– 82 TO TO
TO 75
TO –2 8 76
64 –4 9
52 –3 7
–1 6

TO TO TO TO

81 83 92 97
–4 2 –6 6 –3 9 –5 8

Approved by Curriculum Development Centre, Sanothimi, Bhaktapur 147 vedanta Excel in Mathematics - Book 1

More Subtraction - with Borrowing
3. Let’s borrow 1 ten from tens place to ones place, then subtract.

25 1 ten is burrowed from 74 1 ten is borrowed from
–1 8 2 tens to 5 ones. So, 5 7 tens to 4 ones. So, 4
ones becomes 15 and 2 –4 5 ones becomes 14 and 7
07 tens becomes 1 ten. 29 tens becomes 6 tens.
15 – 8 = 7 and 1 – 1 = 0 14 – 5 = 9 and 6 – 4 = 2
22
31 34 40 56
0– 1 4 –2 5 –2 1 –1 9
1 5– 1 6
8

63 75 87 91 80
–3 5 –3 8 –5 9 –4 6 –7 3

54 66 72 88 95
–2 7 –4 8 –4 4 –6 9 –3 6

4. Let’s borrow 1 ten if necessary from tens place to ones place,
then subtract.

24 24 37 37 45
–1 5 –1 2 –1 8 –1 3 –2 7

45 50 59 60 68
–2 3 –2 5 –2 5 –3 8 –3 8

vedanta Excel in Mathematics - Book 1 148 Approved by Curriculum Development Centre, Sanothimi, Bhaktapur