Oasis math 2

6. Add: 6

T O T O T O
2 6 6 4 6 5
+ 5 7 + 2 7 + 9

7. Add: 6

H T O H T O H T O

5 3 4 4 7 6 3 8 6
7 6 1 4 7 7
+ 2 + 2 + 1

8. Sukriti spent Rs. 386 to buy her books and Rs. 146 to buy her bag.

How much money did she spend altogether? 2

She spent Rs. altogether.

9. In a school there are 287 boys and 164 girls. How many students are

there altogether? 2

There are altogether
students.

kf7\oqmd ljsf; sG] b|af6 :jLs[t Oasis School Mathematics Book-2 101

Subtraction
Basic preparation for subtraction:

Write the correct number in the box.

8-2= 6 5-4= 6-3=
8-2=
9-0= 4-3= 5-5=
9-5=
7-4= 6-2=

3-2= 6-1=

Take away 3 from 5 = Take away 6 from 9 =
Take away 2 from 6 =
Take away 5 from 6 = Take away 4 from 7 =
Take away 7 from 7 =
I have to keep 8 in my
mind and 2 in my hand.
Then I have to count 2

Steps backward.

Complete as shown:

4-2 8 - ..... 5 - .....
5-3 2 6-4 6 - ..... 4 4 - ..... 6 - ..... 3 4 - .....

3-1 7 - ..... 7 - .....

7 - ..... 9 - ..... 6 - .....
9 - ..... 5 7 - .....
9 - ..... 6 8 - ..... 10- ..... 7 8 - .....
8 - .....
10 -..... 11-.....

102 Oasis School Mathematics Book-2 kf7\oqmd ljsf; s]Gb|af6 :jLst[

Regrouping of tens and ones

Look and learn.

5 Tens + 3 Ones = 4 Tens + 1 Ten + 3 Ones

6 Tens + 2 Ones = 4 Tens + 13 Ones My idea, decrease the
= 5 Tens + 12 Ones Tens by 1 and increase

One by 10.

Complete the following:

3 Tens + 4 Ones = 2 Tens + 14 Ones
Tens + Ones
5 Tens + 3 Ones = Tens + Ones
8 Tens + 7 Ones = Tens + Ones
Tens + Ones
4 Tens + 6 Ones = Tens + Ones
6 Tens + 1 Ones = Tens + Ones
7 Tens + 3 Ones = Tens + Ones
Tens + Ones
9 Tens + 4 Ones = Tens + Ones
Tens + Ones
8 Tens + 4 Ones = Tens + Ones

1 Tens + 2 Ones =

2 Tens + 5 Ones =

4 Tens + 3 Ones =

5 Tens + 7 Ones =

kf7o\ qmd ljsf; sG] ba| f6 :jLs[t Oasis School Mathematics Book-2 103

Subtraction without borrowing

Look and learn.

T O It’s simple ! I have
5 4 to subtract Tens and
- 2 3
3 1 Ones separately.

Steps
Subtract Ones: 4-3=1
Subtract Tens: 5-2=3

Subtract: T O T O T O
5 6 6 3 4 6
T O - 4 4 - 5 1 - 3 3
4 7
- 2 3

T O T O T O T O
8 4 7 4 9 1 6 3
- 3 3 - 6 0 - 4 1 - 5 2

T O T O T O T O
7 2 9 7 9 8 3 7
- 4 1 - 8 4 - 6 2 - 2 6

T O T O T O T O
5 4 6 3 8 6 7 8
- 2 3 - 3 2 - 8 2 - 3 7

104 Oasis School Mathematics Book-2 kf7\oqmd ljsf; sG] b|af6 :jLs[t

Subtract the following numbers by counting backward:

37 - 4 = 36 35 34 33 33

62 - 6 =

58 - 5 =

82 - 4 =

55 - 5 =

23 - 4 =

31 - 3 =

57 - 6 = 28 – 5 = Keep 28 in your mind.
Subtract mentally: 5 in your mind.
28 – 5 = 23 38 – 5 = 33 Count 5 Steps backward
27, 26, 25, 24, 23
18 – 5 = 7–2= 38 – 5 = ∵ 28 – 5 = 23

42 – 2 = 44 – 2 = 14 – 2 =

27 – 2 = 17 – 2 = 15 – 3 = My idea ! Reduce
Tens place by one.

Write the number which is:

10 less than 34 = 24 10 less than 73 =

10 less than 30 = 10 less than 85 =

10 less than 51 = 10 less than 44 =

10 less than 23 = 10 less than 41 =

10 less than 29 = 10 less than 73 =

kf7\oqmd ljsf; s]Gb|af6 :jLs[t Oasis School Mathematics Book-2 105

Subtraction of three digit numbers (without
borrowing)

Look and learn.

H T O Subtract Ones : 6 - 4 = 2
5 4 6 Subtract Tens : 4 - 3 = 1
- 2 3 4 Subtract Hundreds : 5 - 2 = 3
3 1 2
Subtract:

H T O H T O H T O H T O

5 2 3 5 3 7 6 3 7 4 8 3

- 2 1 2 - 1 2 4 - 2 1 4 - 2 7 1

H T O H T O H T O H T O
3 7 5 8 9 5 6 6 4 4 7 3
- 2 4 3 - 2 6 2 - 3 0 2 - 1 4 2

H T O H T O H T O H T O
6 5 5 4 5 6 6 6 8 3 8 7
- 4 2 5 - 2 2 4 - 4 0 6 - 1 6 5

H T O H T O H T O H T O
8 4 6 3 6 9 5 6 3 4 6 2
- 3 4 2 - 2 1 4 - 3 2 3 - 2 1 1

106 Oasis School Mathematics Book-2 kf7\oqmd ljsf; sG] ba| f6 :jLs[t

Subtraction of 2-digit numbers (with borrowing)

Look and learn. 6 3 Steps
- 2 7 • Borrow 1 Tens from 6

Borrow 1 Tens from 6 Tens to 3 Ones Tens to 3 Ones leaving
5 Tens
6 Tens + 3 Ones = 5 Tens + 13 Ones • 1 Tens + 3 Ones = 13
Ones
- 2 Tens + 7 Ones = - 2 Tens + 7 Ones • 6 Tens 3 Ones = 5 Tens
13 Ones
H ence , 6 3 3 Tens + 6 Ones • Subtract Tens and Ones
- 2 7 separately 13 Ones - 7
3 6 Complete as above: Ones = 6 Ones
• 5 Tens - 2 Tens = 6 Ones

6 Tens + 8 Ones = Tens + Ones 68
- 3 Tens + 9 Ones = - Tens + Ones 39
Tens + Ones

7 Tens + 2 Ones = Tens + Ones 72
- 5 Tens + 8 Ones = - Tens + Ones 58
Tens + Ones

3 Tens + 1 Ones = Tens + Ones 31
- 8 Ones = - Tens + Ones 8
Tens + Ones

5 Tens + 6 Ones = Tens + Ones 56
- 2 Tens + 8 Ones = - Tens + Ones 28
Tens + Ones

kf7o\ qmd ljsf; sG] ba| f6 :jLs[t Oasis School Mathematics Book-2 107

Subtraction of 2-digit numbers (with borrowing)

Look and learn.

T O Steps:
4 13 • Borrow 1 Tens from 5 Tens, leaving 4 Tens
5 3 • In Ones: 1 Tens + 3 Ones = 13 Ones
- 3 7 • Subtract Ones: 13 Ones - 7 Ones = 6 Ones
1 6 • Subtract Tens: 4 - 3 = 1 Tens

Subtract: T O T O T O

T O 7 6 6 7 4 3
8 13 - 4 8 - 4 9 - 1 8
9 3
- 1 5 O
7 8
5
T O T O T O T 9

5 5 5 2 6 1 4
- 3 6 - 1 7 - 2 3 - 1

T O T O T O T O

5 7 3 4 4 3 5 2
- 3 8 - 1 7 - 2 8 - 2 6

T O T O T O T O

4 2 6 3 9 3 8 2
- 1 6 - 3 6 - 7 6 - 3 9

108 Oasis School Mathematics Book-2 kf7o\ qmd ljsf; sG] b|af6 :jLs[t

Subtraction of three digit numbers (with borrowing)

Look and learn. H T O I have 2 Ones. If you give me
3 12 12 1 Tens, I will have 12 Ones.
I have 3 Tens, if I give you 1 4 3 2
Tens, I will have 2 Tens

- 1 5 6

Steps: 2 7 6

• Borrow 1 Tens from 3 Tens to 2 Ones leaving 2 Tens

• In Ones: 1 Tens + 2 Ones = 12 Ones

• Subtract Ones: 12 Ones - 6 Ones = 6 Ones

• Borrow 1 Hundreds from 4 Hundreds to 2 Tens

• 1 Hundreds + 2 Tens = 12 Tens

• Subtract Tens: 12 Tens - 5 Tens = 7 Tens

• Subtract Hundreds: 3 Hundreds - 1 Hundreds = 2 Hundreds

Subtract as above: H T O H T O
H T O
6 6 7 7 7 8
3 7 5 - 3 4 9 - 2 4 9
- 1 6 7

H T O H T O H T O

7 8 2
6 4 3 - 4 7 5 2 6 3
- 1 2 6 - 1 4 7

H T O H T O H T O

5 7 2 9 9 3 5 3 7
- 2 6 3 - 1 8 8 - 2 5 6

kf7o\ qmd ljsf; s]Gb|af6 :jLs[t Oasis School Mathematics Book-2 109

H T O H T O H T O H T O

5 6 2 3 4 5 5 6 3 7 7 1
- 2 4 9 - 1 2 7 - 2 2 5 - 3 4 6

H T O H T O H T O H T O

6 3 6 8 2 7 5 7 2 7 6 5
- 3 5 4 - 3 6 4 - 1 4 1 - 3 8 4

H T O H T O H T O H T O

2 3 5 5 2 4 6 8 2 4 0 2
- 1 7 6 - 3 5 6 - 3 9 3 - 2 8 3

H T O H T O H T O H T O

6 4 4 7 3 2 5 7 3 2 2 5
- 3 7 6 - 3 6 4 - 2 8 6 - 1 4 6

H T O H T O H T O H T O

6 3 2 5 6 3 4 1 3 8 5 2
- 4 5 6 - 2 8 7 - 1 6 7 - 3 5 7

110 Oasis School Mathematics Book-2 kf7\oqmd ljsf; s]Gba| f6 :jLs[t

The relation between addition and subtraction

Look at the following relations.

If 5 the n 9 an d 9 Again, 3 4 Then 9 6 and 9 6
+ 4 – 4 – 5 + 6 2 – 3 3 – 6 2
9 5 4 9 6 6 2 3 4

Without actual subtraction complete as above

If 5 then 14 and 14 If 1 5 then 3 3 and 3 3
+ 9 – 9 – 5 +18 –15 – 18

14 33

I f 2 7 then 5 9 and 5 9 If 4 5 then 6 8 and 6 8
+ 32 – 3 2 – 2 7 +23 –45 – 23

59 68

If then and If then and

467 599 599 524 755 755

+1 3 2 – 1 3 2 – 4 6 7 +2 3 1 – 2 3 1 – 5 2 4

599 755

If then and Challenge!
Add the given two numbers and write
372 517 517 two subtraction facts from the given:

+1 4 5 – 1 4 5 – 3 7 2 423
+1 4 2
517

kf7o\ qmd ljsf; s]Gba| f6 :jLst[ Oasis School Mathematics Book-2 111

Subtraction in our daily life

Look and learn.

Subtraction Difference Take away
Balance
Remainder Left
14
In a school, there are 564 5 6 4
students. Out of them, – 3 4 5
345 are boys. Find the 2 1 9
number of girls.
kf7o\ qmd ljsf; sG] b|af6 :jLst[
There are 219 girls.

The monthly income of Saleem
is Rs. 763. His monthly expense
is Rs. 345. Find his monthly
saving.
His monthly saving is Rs.

There are 632 boys and
356 girls in a school.
How many more boys
than girls are there in the
school?

more boys are there than girls.

112 Oasis School Mathematics Book-2

A man bought 463 oranges Oasis School Mathematics Book-2 113
and sold 375 of them. How
many oranges are left with
him?
oranges are left with
him.

There are 290 pages in a
story book. Aadhya has
read 38 pages. How many
pages are left to read?
pages are left to
read.

A woman bought the goods
of Rs. 392 and gave Rs. 500
to the shopkeeper. Find
how much money did she
get back?

She got back Rs.

A boy has Rs. 425, he wants to
buy a bag, that costs Rs. 600.
How much extra money does
he need to buy the bag?

He needs Rs.

kf7\oqmd ljsf; sG] b|af6 :jLs[t

Lakpa bought a story book for Rs. 265 and

Activity bought a Nobel for Rs. 387. If he has Rs. 945,
find how much money is left with him?

Let's find the total amount spent by him.

1 1
2 6 5

+ 3 8 7
6 5 2

He spent Rs. 652 to buy two books.

Let's find the money left with him,

11

9 4 5

– 6 5 2

6 5 2

Hence, Rs. 293 left is with him.

Solve the following problems as above:

Chameli has Rs. 823. She bought a

Nobel for Rs. 478 and bought a book

of poetry for Rs. 156. Find how much

money is left with her.

Hence, Rs. left with her.

Munariya has Rs. 942 for her shopping.
She spent Rs. 286 to buy doll and
spent Rs. 487 to buy toys. Find how
much money is left with her?

Hence, Rs. is left with her.

114 Oasis School Mathematics Book-2 kf7o\ qmd ljsf; s]Gb|af6 :jLs[t

What does a teacher tell the students?

Worksheet To find the answer, work out the problems and
write the letter of each answer with the help of

the code given in the table below:

AC DG I LMNO R S
6 43 25 19 5 40 15 45 16 36 53
5 2 5 3 6 7 8 2 4 5
– 3 3
1 9 - 3 7 - 5 1 - 5 7 - 3 0

G

7 3 1 2 1 7 4 3 7 0
- 5 7 + 2 4 + 2 8 - 3 8 - 2 5

3 7 2 7 1 8 2 3
- 1 8 + 1 6 + 2 2 - 1 7

6 3 3 6
- 1 0 + 1 7

kf7\oqmd ljsf; s]Gb|af6 :jLst[ Oasis School Mathematics Book-2 115

Unit Evaluation 8-5= Full Marks: 30
7-2=
1. Subtract: 2
7 - 3 =
9 - 7 = 2

2. Write the number which is: 4
7 6 9
10 less than 24 = - 2 1 4
1 less than 15 =
100 less than 325 =
5 less than 20 =

3. Subtract: 3 6 7 4 6 3
3 7 - 1 2 4 - 2 5 3
- 2 3

4. Subtract by counting backwards: 4
63 - 5 =
72 - 3 =
75 - 6 =
33 - 4 =

116 Oasis School Mathematics Book-2 kf7o\ qmd ljsf; s]Gb|af6 :jLst[

5. Subtract: T O 6

T O 7 4 T O
- 3 7
7 3 7 2
- 2 4 - 4 6

6. Subtract: 6

H T O H T O H T O

5 2 7 8 3 3 7 3 4
- 3 3 8 - 4 2 7 - 4 6 7

7. Solve the following verbal problems. 6

a. There are 73 students in a class, out
of them 37 are boys.

How many are girls?

are girls.

b. In a school auditorium there are
712 seats. If 485 people attended a
function, how many seats were left
vacant?

seats were left vacant.

c. A girl is studying Nobel having
325 pages. She completed reading
238 pages. How many pages were
left to study?

page were left to study.

kf7\oqmd ljsf; sG] b|af6 :jLs[t Oasis School Mathematics Book-2 117

Our
School

Contents
• Length
• Area
• Fraction

118 Oasis School Mathematics Book-2 kf7\oqmd ljsf; sG] ba| f6 :jLs[t

Length

Comparison of length

Look and learn.

Shorter pencil Longer pencil

We can easily compare by estimation which object is longer and which
is shorter.

How to find which object is longer and which is shorter by measurement?

How to measure the length?

What is the length of the rope?

Why that?

It is 7 handspan long.

It is 8 handspan long. Because the length of handspan is
different in different persons.

Body parts used to measure the length.

Footspan Cubit Fingers Footstep Handspan

kf7\oqmd ljsf; s]Gb|af6 :jLs[t Oasis School Mathematics Book-2 119

Scale of ruler

Look and learn.

We use fixed measurement units metre (m), centimetre (cm), etc. to
measure the length.

We can measure the length with the help of a ruler or measuring tape.

Ruler Measuring tape
= 4 cm
Write the scale shown by the arrow? =
=
120 Oasis School Mathematics Book-2 =

kf7\oqmd ljsf; sG] b|af6 :jLst[

Measuring length

Write the length of given objects?

= 5 cm
=
=
=

kf7o\ qmd ljsf; sG] b|af6 :jLst[ =

=

Oasis School Mathematics Book-2 121

Measurement of length of lines I have to keep the 0
reading of the ruler at the
Look and learn.
initial point.

AB

= 7 cm

Measure the length of the following lines.

PQ

= cm

CD

= cm

XY

= cm

MN

= cm

EF

= cm

GH

= cm

122 Oasis School Mathematics Book-2 kf7\oqmd ljsf; sG] b|af6 :jLst[

Measure the length of given line segment.

cm cm

cm

cm

Project work Footspan cm
Measure the following objects.

Handspan Cubit

Your bench

Your black/white
board

Window of your
classroom

Your classroom

Your maths book

kf7\oqmd ljsf; sG] ba| f6 :jLst[ Oasis School Mathematics Book-2 123

Estimation of Length in cm and its verification

Length of the above line is 1 cm.

Length of the above line is 2 cm.

Length of a pen is around 7 cm. Length of mobile is around 6 cm.

Length of a comb is around 9 cm. Length of book around is 10 cm.

Estimate the length of given object and circle the answer that gives
the best estimate.

5 cm 9 cm. 3 cm 9 cm.

2 cm 6 cm. 3 cm 8 cm.

124 Oasis School Mathematics Book-2 kf7o\ qmd ljsf; sG] b|af6 :jLs[t

Activity Estimate the length of given object, also
measure its actual length.
Object
Estimated length Actual length

.....................cm ...................cm

.....................cm ...................cm

.....................cm ...................cm
.....................cm ...................cm

.....................cm ...................cm

kf7o\ qmd ljsf; sG] b|af6 :jLst[ .....................cm ...................cm

Oasis School Mathematics Book-2 125

Measurement of the line in cm and mm.

Let's observe the measurement of given line segment.

What is the length of above line? I have to count
smaller scale after 5.
Keep the first point of the line in 0 scale of
ruler. Observe the reading of end point

End of point of given lines is 8 units right from 5.
Hence, its length is 5 cm 8 mm.

What is the length of given lines in cm an mm?

cm mm

cm mm

126 Oasis School Mathematics Book-2 cm mm

kf7o\ qmd ljsf; sG] b|af6 :jLst[

cm mm

cm mm

Measure the length of given line in cm and mm. mm
cm

cm mm
cm mm

cm mm

cm mm cm mm
cm
kf7o\ qmd ljsf; sG] b|af6 :jLs[t mm

Oasis School Mathematics Book-2 127

Area

Look and learn.

The surface of both the book The surface of the book
and eraser are rectangle. is greater than the
surface of the eraser.
Let’s compare their surfaces.
Greater surface means
The object having larger surface has greater area. Smaller
larger area. surface means smaller
The object having smaller surface
has smaller area. area.

Compare the surface of the given objects and tick
the object having a larger area.

128 Oasis School Mathematics Book-2 kf7\oqmd ljsf; sG] ba| f6 :jLst[

Activity Our School

Observe the surface of following objects in your school, compare
their area write the numbers from 1 to 9 in increasing order.

kf7\oqmd ljsf; s]Gb|af6 :jLst[ Oasis School Mathematics Book-2 129

Measurement of Area

Look and learn.

It is a square. 1cm

Its all sides are 1 cm each. 1cm 1cm
Its area is 1 square cm.

1cm

There are three squares. Count the number
Their area is 3 square cm. of squares to find the

area

Here are three
squares, so that the
area is 3 square cm.

Complete as above:

There are squares. There are squares.

∴ Their area is square cm. ∴ Their area is square cm.

There are squares. There are squares.

∴ Their area is square cm. ∴Their area is square cm.

130 Oasis School Mathematics Book-2 kf7\oqmd ljsf; s]Gb|af6 :jLs[t

Find the area of the shaded parts in the given figure.

7 square cm square cm
square cm square cm

Worksheet square cm

kf7\oqmd ljsf; sG] ba| f6 :jLs[t • Write the letter T using 5 boxes and
colour it blue.

• Write the letter E using 8 boxes and
colour it red.

• Write the letter H using 7 boxes and
colour it green.

• Write the letter F using 6 boxes and
colour it yellow.

• Write the letter I using 8 boxes and
colour it purple.

Total area of coloured part
= ..... square cm
Remaining area
= ........ square cm

Oasis School Mathematics Book-2 131

Unit Evaluation Full Marks: 10

1. Compare the surface of given objects and tick (√) the object
having larger area and cross (×) the object having smaller area. 2

2. Measure the length of given line. 2

cm cm 2

3. Write the measurement of given line in cm and mm.

cm mm 4

4. Write the length of given objects.

=

=

132 Oasis School Mathematics Book-2 kf7\oqmd ljsf; s]Gb|af6 :jLst[

Fraction

Look and learn.

One half
Take a rectangular piece of paper.

Fold it down the middle. Such
that both ends of the paper should
touch.

Open it out. There is a line down the
middle, which divides the paper
into 2 equal parts.

whole half

Divide an apple into two equal parts.

chocolate half half

cake half half

kf7o\ qmd ljsf; sG] b|af6 :jLst[ Oasis School Mathematics Book-2 133

Look at the given pictures. Tick the objects that are cut in half.
Tick the shapes that cut into half in the given figures.

Using pencils and ruler divide the given shapes into half. Colour
half part.

134 Oasis School Mathematics Book-2 kf7o\ qmd ljsf; sG] ba| f6 :jLst[

Fourths
Divide a bread into four equal parts, leave one to your four friends.

Each part of bread represents the fourth.

one whole one fourth

one whole one fourth

kf7o\ qmd ljsf; sG] ba| f6 :jLs[t Oasis School Mathematics Book-2 135

Look at the given pictures. Tick () the object that are cut in fourth.

Tick () the shapes that are divided into fourths (four equal parts)

With the help of pencils and ruler, divide the following shapes
into four equal parts.

136 Oasis School Mathematics Book-2 kf7o\ qmd ljsf; s]Gb|af6 :jLst[

There are four parts of the same size.
Each part is one fourth.

One of the four parts is shaded.

One-fourth is shaded.

The shaded part is 1 .
4

Here 2 of the 4 equal parts are shaded.
Two - fourths is shaded.

2
∴ Shaded part is 4 .

Here 3 of the 4 equal parts are shaded.

Three - fourths is shaded.

∴ Shaded part is 3 .
4

Now, I am clear
how to read
and write the
fraction.

kf7\oqmd ljsf; s]Gba| f6 :jLs[t Oasis School Mathematics Book-2 137

Colour one fourth red:
Colour two-fourths green:
Colour three-fourths yellow:
Write the fraction of the shaded parts.

138 Oasis School Mathematics Book-2 kf7o\ qmd ljsf; s]Gb|af6 :jLs[t

Activity

Find 4 different ways to put these rectangles into half.

Find 4 different ways to put these squares into fourths.

Thirds We call the equal
This is a circle. parts thirds.

Divide the circle into three equal parts.

One of the three parts is Here, two of three equal parts
shaded. are shaded.
One third is shaded. Two thirds is shaded.

1 2
∴ The shaded part is 3 . ∴ The shaded part = 3 .

kf7o\ qmd ljsf; s]Gb|af6 :jLs[t Oasis School Mathematics Book-2 139

Tenth and other fractions

Look and learn.

Here are ten equal parts.

One part of ten equal parts is shaded.

∴ The shaded part is 1 .
10

Four parts out of ten equal parts are shaded.

∴ The shaded part is 4 .
10

Remember !
The number of shaded parts

Fraction = The total number of parts

Colour one third red.

Colour two thirds green.

State the fraction of the shaded part:

140 Oasis School Mathematics Book-2 kf7\oqmd ljsf; s]Gb|af6 :jLst[

Write the fraction of the shaded parts:

Colour the given fraction in the given figure:

87
10 10

96 4
10 10 10

Colour two with the equal fraction same colour.

1 one third 1 two fourth
2 4

1 two third 2 three fourth
3 4

2 one half 3 one fourth
3 4

kf7\oqmd ljsf; s]Gba| f6 :jLs[t Oasis School Mathematics Book-2 141

Division of objects into halves.

Phurba has 8 pencils.
He has to divide it into two equal parts.
How many pencils are there in each part?
Discuss with your friends.

Look at the following collections. Draw a line and divide the
collections into two equal halves. Write the number of objects in
each group.

142 Oasis School Mathematics Book-2 kf7o\ qmd ljsf; s]Gb|af6 :jLst[

Divide the given objects into equal groups. Write in fraction and
write the number of objects in each group.

Fraction 1
2

The total number of objects: 8

The number of objects in each group 4

∴ 1 of 8 = 4.
2

Fraction

The total number of objects =

The number of objects in each group

∴ 1 of =
2

Fraction

The total number of objects =

The number of objects in each group

∴ 1 of =
2

Fraction

The total number of objects =

The number of objects in each group

∴ 1 of =
2

kf7\oqmd ljsf; sG] b|af6 :jLst[ Oasis School Mathematics Book-2 143

Activity My School

Perform the following activities in your school and the questions
given below.

Select 10 students from your class and divide them into two
equal groups.
What is the number of students in each group?

Full 10 students

Half of 10 = students.

Select 12 students from your class and divide them into
four equal groups. What is the number of students in each
group?
Full 12 students.

One fourth of 12 = students.

Take 6 copies from your bag and divide them into two

equal groups. What is the number of copies in each group?

Full copies

Half of 6 = copies.

144 Oasis School Mathematics Book-2 kf7o\ qmd ljsf; s]Gba| f6 :jLst[

Division of objects into 3 groups

Divide the given objects into three equal groups and write the
number of objects in each group.

Fraction 1

3

Total Number of objects 9

The number of objects in each group 3

∴ 1 of 9 =3
3

Fraction

Total Number of objects

The number of objects in each group

∴ 1 of =
3

Fraction

Total Number of objects

The number of objects in each group

∴ 1 of =
3

Fraction

Total Number of objects

The number of objects in each group

∴ 1 of =
3

kf7\oqmd ljsf; s]Gb|af6 :jLs[t Oasis School Mathematics Book-2 145

Division of objects into 4 groups

Divide the given objects into four equal groups. Write the number of
objects in each group.

Fraction 1

4

Total Number of objects 12

The number of objects in each group 3

∴ 1 of 12 = 3
4

Fraction

Total Number of objects

The number of objects in each group

∴ 1 of =
4

Fraction

Total Number of objects

The number of objects in each group

∴ 1 of =
4

Fraction

Total Number of objects

The number of objects in each group

∴ 1 of =
4

146 Oasis School Mathematics Book-2 kf7o\ qmd ljsf; s]Gba| f6 :jLs[t

Unit Evaluation Full Marks: 20
1. Colour the figures to show the given fraction:
5

1 22
2 34

1 3
4 10

2. Write the fraction of the shaded part: 5

3. Divide the objects into the given number of equal parts and write

the number of objects in each group: 3

Two groups Four groups Three groups

kf7\oqmd ljsf; sG] b|af6 :jLs[t Oasis School Mathematics Book-2 147

4. Divide the following objects into two groups and write the

number of objects in each group. 3

5. Match the following: 4

1 one fourth
2
one half
3
4 two third

1 three fourth
4

2
3

Activity

I. Make a pair of fractions with their corresponding pictures.

> Make a group of cards. In one group write the fractions 1 , 1 , 1
2 3 3
1 1 1
, 4 , 4 , 4 . In another group draw their corresponding pictures.

> Ask one student to take one card from one group and ask another
student to identify the corresponding picture from another
group. Repeat the process.

148 Oasis School Mathematics Book-2 kf7\oqmd ljsf; sG] b|af6 :jLst[

My
Creation

Contents
• Lines
• Plane Figure

kf7o\ qmd ljsf; sG] ba| f6 :jLst[ Oasis School Mathematics Book-2 149

Lines

Straight lines and curved lines

This is a point.

This is a straight line.

This is a curved line.

Naming the straight line Name the given straight line

This is a straight line. P QM NX Y

Its two end points are P and Q

∴ Its name is PQ or QP.

Circle the letter having two straight lines.

Circle the letter having a straight line and a curved line.
Circle the letter having a curved line.

Circle the letter having a curved line and two straight lines.

Write three English letters having a straight line and a curved line.

Write three Nepali letters having a curved line and two straight lines.

150 Oasis School Mathematics Book-2 kf7o\ qmd ljsf; sG] ba| f6 :jLst[