Math 1

Number bonding of 10 5+5

9 + ___
14 – ___

3 + ___ 10 7 + ___

15 – ___ 12 – ___

6 + ___

8+ = 10

– 7 = 10

3+ = 10

Mathematics 1 147

Concept of Devanagari Numbers

SONG

Ps, b'O,{ tLg, rf/, kfFr
dn} ] Pp6f df5f kfPF .
5, ;ft, cf7, gf}, bz
p;nfO{ dn} ] hfg lbPF .
lsg ltdLn] hfg lbof} <
lsgsL p;n] cf}Fnf 6fS] of] .
s'g cfF}nf 6fS] of] ltd|f] <
sfG5L cfF}nf d]/f] bflxg] xftsf] .

148 Mathematics 1

See, feel and learn. ! Ps
@ bO' {
Mathematics 1 # tLg
$ rf/
% kfFr

149

^5
& ;ft
* cf7
( gf}

150 Mathematics 1

Hindu- Number b]jgfu/L bj] gfu/L ;+Vofsf]
Arabic Name ;+Vof gfd
Number
1 One ! Ps
2 Two @ b'O{
3 Three # tLg
4 Four $ rf/
5 Five % kfFr
6 Six ^5
7 Seven & ;ft
8 Eight * cf7
9 Nine ( gf}
10 Ten !) b;
11 Eleven !! P3f/
12 Twelve !@ afx|
13 Thirteen !# tx] |
14 Fourteen !$ rfw}
15 Fifteen !% kGw|
16 Sixteen !^ ;fx] |
17 Seventeen !& ;q
18 Eighteen !* c7f/
19 Nineteen !( pGgfO;
20 Twenty @) aL;

Mathematics 1 151

Write in Devanagari Letters.

1 ! Ps Ps Ps
2 @ b'O{
3 # tLg Mathematics 1
4 $ rf/
5 % kfFr
6 ^5
7 & ;ft
8 * cf7
9 ( gf}
10 !) b;
11 !! P3f/
12 !@ afx|
13 !# t]x|
14 !$ rf}w
15 !% kGw|
16 !^ ;f]x|
17 !& ;q
18 !* c7f/
19 !( pGgfO;
20 @) aL;

152

21 Twenty-one @! PSsfO;
22 Twenty-two @@ afO;
23 Twenty-three @# t]O;
24 Twenty-four @$ rf}aL;
25 Twenty-five @% kRrL;
26 Twenty-six @^ 5AaL;
27 Twenty-seven @& ;QfO;
28 Twenty-eight @* c7\7fO;
29 Twenty-nine @( pgfGtL;
30 Thirty #) tL;
31 Thirty-one #! PstL;
32 Thirty-two #@ aQL;
33 Thirty-three ## t]QL;
34 Thirty-four #$ rft} L;
35 Thirty-five #% kt} L;
36 Thirty-six #^ 5QL;
37 Thirty-seven #& ;}tL;
38 Thirty-eight #* c7tL;
39 Thirty-nine #( pGffGrfnL;
40 Forty $) rfnL;
Mathematics 1
153

Write in Devanagari Letters. Mathematics 1

21 @! PSsfO;
22 @@ afO;
23 @# tO] ;
24 @$ rfa} L;
25 @% kRrL;
26 @^ 5AaL;
27 @& ;QfO;
28 @* c7\7fO;
29 @( pgfGtL;
30 #) tL;
31 #! PstL;
32 #@ aQL;
33 ## tQ] L;
34 #$ rf}tL;
35 #% k}tL;
36 #^ 5QL;
37 #& ;t} L;
38 #* c7tL;
39 #( pGffGrfnL;
40 $) rfnL;

154

41 Forty-one $! PsrfnL;
42 Forty-two $@ aofnL;
43 Forty-three $# lqrfnL;
44 Forty-four $$ rf}jfnL;
45 Forty-five $% k}tfnL;
46 Forty-six $^ 5ofnL;
47 Forty-seven $& ;t} fnL;
48 Forty-eight $* c7\rfnL;
49 Forty-nine $( pgfGrf;
50 Fifty %) krf;
51 Fifty-one %! PsfpGg
52 Fifty-two %@ afpGg
53 Fifty-three %# lqkGg
54 Fifty-four %$ rf}jGg
55 Fifty-five %% krkGg
56 Fifty-six %^ 5kGg
57 Fifty-seven %& ;GtfpGg
58 Fifty-eight %* cG7fpGg
59 Fifty-nine %( pgfG;f7L
60 Sixty ^) ;f7L
Mathematics 1
155

Write in Devanagari Letters. Mathematics 1

41 $! PsrfnL;
42 $@ aofnL;
43 $# lqrfnL;
44 $$ rfj} fnL;
45 $% kt} fnL;
46 $^ 5ofnL;
47 $& ;}tfnL;
48 $* c7\rfnL;
49 $( pgfGrf;
50 %) krf;
51 %! PsfpGg
52 %@ afpGg
53 %# lqkGg
54 %$ rfj} Gg
55 %% krkGg
56 %^ 5kGg
57 %& ;GtfpGg
58 %* cG7fpGg
59 %( pgfG;f7L
60 ^) ;f7L

156

61 Sixty-one ^! Ps;7\7L
62 Sixty-two ^@ a};7\7L
63 Sixty-three ^# lq;7\7L
64 Sixty-four ^$ rf};7\7L
65 Sixty-five ^% k;} 7\7L
66 Sixty-six ^^ 5};7\7L
67 Sixty-seven ^& ;t;7\7L
68 Sixty-eight ^* c7;7\7L
69 Sixty-nine ^( pgfG;Q/L
70 Seventy &) ;Q/L
71 Seventy-one &! PsxQ/
72 Seventy-two &@ axQ/
73 Seventy-three &# lqxQ/
74 Seventy-four &$ rf}xQ/
75 Seventy-five &% krxQ/
76 Seventy-six &^ 5oxQ/
77 Seventy-seven && ;txQ/
78 Seventy-eight &* c7xQ/
79 Seventy-nine &( pgfGc;L
80 Eighty *) c;L
Mathematics 1
157

Write in Devanagari Letters. Mathematics 1

61 ^! Ps;7\7L
62 ^@ a;} 7\7L
63 ^# lq;7\7L
64 ^$ rf;} 77\ L
65 ^% k;} 77\ L
66 ^^ 5};77\ L
67 ^& ;t;77\ L
68 ^* c7;77\ L
69 ^( pgfG;Q/L
70 &) ;Q/L
71 &! PsxQ/
72 &@ axQ/
73 &# lqxQ/
74 &$ rfx} Q/
75 &% krxQ/
76 &^ 5oxQ/
77 && ;txQ/
78 &* c7xQ/
79 &( pgfGc;L
80 *) c;L

158

81 Eighty-one *! Psf;L
82 Eighty-two *@ aof;L
83 Eighty-three *# lqof;L
84 Eighty-four *$ rf}/f;L
85 Eighty-five *% krf;L
86 Eighty-six *^ 5of;L
87 Eighty-seven *& ;tf;L
88 Eighty-eight ** c7f;L
89 Eighty-nine *( pgfGgAa]
90 Ninety () gAa]
91 Ninety-one (! PsfgAa]
92 Ninety-two (@ aofgAa]
93 Ninety-three (# lqofgAa]
94 Ninety-four ($ rf/} fgAa]
95 Ninety-five (% kGrfgAa]
96 Ninety-six (^ 5ofgAa]
97 Ninety-seven (& ;GtfgAa]
98 Ninety-eight (* cG7fgAa]
99 Ninety-nine (( pgfG;o
100 Hundred !)) ;o
Mathematics 1
159

Write in Devanagari Letters. Mathematics 1

81 *! Psf;L
82 *@ aof;L
83 *# lqof;L
84 *$ rf/} f;L
85 *% krf;L
86 *^ 5of;L
87 *& ;tf;L
88 ** c7f;L
89 *( pgfGgAa]
90 () gAa]
91 (! PsfgAa]
92 (@ aofgAa]
93 (# lqofgAa]
94 ($ rf}/fgAa]
95 (% kGrfgAa]
96 (^ 5ofgAa]
97 (& ;GtfgAa]
98 (* cG7fgAa]
99 (( pgfG;o
100 !)) ;o

160

Fill in the blanks. ! Ps
@#
1 One
Eleven rf/} f;L
#&
45
Twenty-seven PsfgAa]
Fifty-four
lq;¶L
73
85 ;tf;L
%!
Sixty-four
krxQ/
79 !))
Thirty-six
161
17

Mathematics 1

Add and Subtract the Followings by Using
Devanagari Numbers.

a.

+=

+ =

b.

-^ =

c.

+ +=

+ +=

d.

e. - %- !=

162 +=
+ - %=

Mathematics 1

5Unit

Time

Identifying, Time, Calendar and
days.

Identifying time

Identifying calendar

Identifying days in a week

Teaching Materials 163

Model of clock and original clock
Sample of Nepali calendar
Sample of School calendar

Mathematics 1

SONG

[Clocks go tick and clocks go tock.]2
make your arms say 3 O'clock.

[Clocks go tick and clocks go tock]2
make your arms say 5 O'clock.

[Clocks go tick and clocks go tock]2
make your arms say 6 O'clock.

[Clocks go tick and clocks go tock]2
make your arms say 9 O'clock.

164 Mathematics 1

Enjoy the following activities as the time in a day.
Morning Time

Wake up Brushing Breakfast Ready to
school

Day Time

Reading Lunch Playing

Evening Time

Returning Snacks Homework Playing at
home home

Mathematics 1 165

See, feel and learn.

Write the time shown by the clocks.

Read the time on the first clock.
Write the same time on the second clock by making hands.

It is 3 O’clock Mathematics 1

166

Match the following. 167

7 O’clock
3 O’clock
5 O’clock
8 O’clock
10 O’clock
6 O’clock

Mathematics 1

Days in a Week

Saturday Sunday Monday

zlgaf/ cfOtaf/ ;fd] af/

7 1 2

Friday 6 Tuesday

z'qmaf/ 3 d+unaf/

5 4

Thursday Wednesday

laxLaf/ aw' af/

How many days There are 7
are there in a days in a week.
week?

168 Mathematics 1

1. How many days are there in a week?
2. Which day is today?
3. Which day is your birthday?
4. Which day was yesterday?
5. Which day will be tomorrow?
6. Which day is holiday?
7. Which day comes after Saturday?
8. Which day comes before Friday?
9. Which is the first day of the week?
10. Which is the 7th day of the week?

Seven days puzzle.

T

r
S

TS t

d d

M 169

Mathematics 1

Reading a Calendar

az} fv @)&& hi] 7 @)&& c;f/ @)&& ;fpg @)&&

cfOt ;fd] du+ n a'w lalx zq' m zlg cfOt ;fd] d+un aw' lalx z'qm zlg cfOt ;f]d d+un aw' lalx z'qm zlg cfOt ;f]d d+un aw' lalx zq' m zlg

!@#$%^ #@ ! @ # !@#$%^ #@ ! @ #
& * ( !) !! !@ !# $ % ^ & * ( !) & * ( !) !! !@ !# $ % ^ & * ( !)
!$ !% !^ !& !* !( @) !! !@ !# !$ !% !^ !& !$ !% !^ !& !* !( @) !! !@ !# !$ !% !^ !&
@! @@ @# @$ @% @^ @& !* !( @) @! @@ @# @$ @! @@ @# @$ @% @^ @& !* !( @) @! @@ @# @$
@* @( #) #! @% @^ @& @* @( #) #! @* @( #) #! @% @^ @& @* @( #) #!

ebf} @)&& c;f]h @)&& sflQ{s @)&& dl+ ;/ @)&&

cfOt ;fd] du+ n aw' lalx z'qm zlg cfOt ;fd] d+un aw' lalx z'qm zlg cfOt ;fd] d+un a'w lalx zq' m zlg cfOt ;f]d d+un aw' lalx zq' m zlg

!@#$%^ !@# #) ! !@#$%^
& * ( !) !! !@ !# $ % ^ & * ( !) @#$%^&* & * ( !) !! !@ !#
!$ !% !^ !& !* !( @) !! !@ !# !$ !% !^ !& ( !) !! !@ !# !$ !% !$ !% !^ !& !* !( @)
@! @@ @# @$ @% @^ @& !* !( @) @! @@ @# @$ !^ !& !* !( @) @! @@ @! @@ @# @$ @% @^ @&
@* @( #) #! @% @^ @& @* @( #) @# @$ @% @^ @& @* @( @* @( #)

kfi} f @)&& df3 @)&& kmfug' @)&& rq} @)&&

cfOt ;fd] d+un a'w lalx zq' m zlg cfOt ;fd] d+un aw' lalx z'qm zlg cfOt ;fd] du+ n aw' lalx z'qm zlg cfOt ;f]d d+un a'w lalx zq' m zlg

!@#$ !@# ! !@#$%^&
% ^ & * ( !) !! $ % ^ & * ( !) @#$%^&* * ( !) !! !@ !# !$
!@ !# !$ !% !^ !& !* !! !@ !# !$ !% !^ !& ( !) !! !@ !# !$ !% !% !^ !& !* !( @) @!
!( @) @! @@ @# @$ @% !* !( @) @! @@ @# @$ !^ !& !* !( @) @! @@ @@ @# @$ @% @^ @& @*
@^ @& @* @( @% @^ @& @* @( #) @# @$ @% @^ @& @* @( @( #) #!

Answer the following questions:

1. How many months are there in a year?
2. How many months have 30 days?
3. How many months have 32 days?
4. How many months have 31 days?
5. Which is the first month of the year?
6. Which is the last month of the year?

170 Mathematics 1

6Unit

Money

Identifying Coins and Notes.

Identifying money
Identifying cost of goods
Calculating cost during buying
and selling

Teaching Materials 171

Different coins and notes of money
Goods and their labeled cost
Cost chart of a shop
Money album

Mathematics 1

Our Money,
Coin and Notes

See, feel and learn.

I know the We can write P for
currency of Nepal paisa and Re for
one rupee, and Rs
is rupees. for rupees.

Our different coins

5 Paisa 10 Paisa 25 Paisa 50 Paisa

1 Rupee 2 Rupees 5 Rupees 10 Rupees

172 Mathematics 1

Our different rupees notes

1 Rupee 2 Rupees

5 Rupees 10 Rupees
20 Rupees 25 Rupees

50 Rupees

Mathematics 1 173

100 Rupees

500 Rupees

1000 Rupees

174 Mathematics 1

Addition of
Coin and Notes

See, feel and learn.

+ = 15 Paisa

5 Paisa 10 Paisa

+ = 75 Paisa
50 Paisa
25 Paisa

Add the followings.

+ =
25 Paisa
10 Paisa

+ =
25 Paisa
5 Paisa

Mathematics 1 175

+ =

5 Paisa 5 Paisa

+ =

25 Paisa 25 Paisa

+=

10 Paisa 50 Paisa

+ =

50 Paisa 50 Paisa

176 Mathematics 1

Add the followings.

Rs. 5 + Rs. 10 + Rs. 20 = Rs.

Rs. 10 + Rs. 10 + Rs. 20 = Rs.

Rs. 10 + Rs. 20 + Rs. 25 = Rs.

Rs. 50 + Rs. 10 + Rs. 20 = Rs.

Mathematics 1 177

Rs. 10 + Rs. 10 + Rs. 50 = Rs.

Rs. 20 + Rs. 20 + Rs. 20 = Rs.

Rs. 50 + Rs. 25 + Rs. 25 = Rs.

Rs. 25 + Rs. 1 + Rs. 2 = Rs.

178 Mathematics 1

Addition activities Add 50 paisa and 10 paisa

Add 50 paisa and 10 paisa 50 paisa
+ 10 paisa
5 paisa
+ 10 paisa 60 paisa

15 paisa

15 paisa 60 paisa

Next idea

5 paisa + 10 paisa = 15 paisa
50 paisa + 10 paisa = 60 paisa

Mathematics 1 179

Add the following Paisa and Rupees.

10 paisa 25 paisa 25 paisa 50 paisa
+ 20 paisa + 10 paisa + 15 paisa + 10 paisa

50 paisa 50 paisa 20 paisa 20 paisa
+ 20 paisa + 10 paisa + 15 paisa + 25 paisa

50 paisa 25 paisa 10 paisa 25 paisa
+ 10 paisa + 15 paisa + 25 paisa + 10 paisa

Rs. 50 Rs. 10 Rs. 15 Rs. 25
+ Rs. 25 + Rs. 10 + Rs. 15 + Rs. 18

Rs. 10 Rs. 20 Rs. 5 Rs. 5
+ Rs. 25 + Rs. 10 + Rs. 15 + Rs. 10

Rs. 10 Rs. 20 Rs. 25 Rs. 25
+ Rs. 5 + Rs. 5 + Rs. 5 + Rs. 20

180 Mathematics 1

Subtraction of Money

See, feel and learn.
Puja has 65 paisa. She lost 5 paisa. How much is left?

5 Paisa 10 Paisa 50 Paisa 65 paisa

– 5 paisa
60 paisa

Subtract the followings paisa and rupees.

65 paisa 25 paisa 10 paisa Rs. 50
– 5 paisa – 10 paisa – 10 paisa – Rs. 10

60 paisa

50 paisa Rs. 50 Rs. 25 Rs. 50
– 25 paisa – Rs. 5 – Rs. 10 – Rs. 20

Rs. 25 Rs. 50 Rs. 20 Rs. 20
– Rs. 10 – Rs. 20 – Rs. 5 – Rs. 5

Mathematics 1 181

The price of different items in a shop are given
below.

5 paisa 10 paisa 50 paisa

Rs. 10 Rs. 25 Rs. 50

What is the total cost of the following items?

10 Paisa 50 Paisa 10 paisa
+ 50 paisa

60 paisa

Rs. 25 Rs. 50 Rs. 25
+ Rs. 50
182
Mathematics 1

How much money will the shopkeeper return?

Goods and Price Given Money Return Money

Rs. 50
– Rs. 25

Rs. 25 Given Money Return Money
Goods and Price

Rs.
– Rs.

Rs. 50

Goods and Price Given Money Return Money

Rs.
– Rs.

Rs. 15 183

Mathematics 1

Simplify the followings:

a. Mother Son Daughter Altogether

++=

b. Ram Hari Geeta Result

++= Result

c. Cost of apple Cost of mango Cost of orange

++ You lost =

d. Mother gave you Father gave you Remaining

+-=

e. Father gave you You buy a book You buy a copy Remaining

- -=

184 Mathematics 1

7Unit

Measurement

Identifying Measurement of
Length.

Identifying measurement system

Identifying length of objects

Using different things to measure
length

Teaching Materials 185

Objects
Hands, palm, fingers, foot
Scale, pencil, stick

Mathematics 1

Measurement of Length

Observe the measurement of length

186 Mathematics 1

Do the activities in your school and find.

Use fingers to measure the length of scale.
It is ________ fingers long.

Use palm to measure the length of desk. 187
It is ________ palms long.

Mathematics 1

Use hand to measure the length of wall.
It is ________ hands long.

Use a stick to measure the length of the play-ground.
It is ________ sticks long.

188 Mathematics 1

Use long scale to measure the length of badminton court.
It is ________ scale long.

Use pencil to measure the length of computer table.

It is ________ pencils long.

Mathematics 1 189

SONG

Stand stand near a wall
and measure your height.
Use your fingers or
Use your palm
to measure your book.
Use your hand or
Use your foot
to measure your play-ground.
Use a rope or
Use a thread
to measure a bread.
Madam,
I know all above are measurements.

190 Mathematics 1

8Unit

Pictograph

Identifying Graph of Pictures.

Identifying number of objects
Identifying the way of
arrangement of objects
Identifying the rows and columns

Teaching Materials 191

Different objects and their collection
Objects in Row and column
Chart paper

Mathematics 1

The articles collected from 30 students of a class
are given below.

How many pencils are there ? Mathematics 1
How many sharpeners are there?
How many pens are there?
How many erasers are there?
How many rulers are there?
How many protractors are there?

192

Let's represent these items in a pictograph.
9

Number of the items 8

7

6

5

4

3

2

1

Pencil Sharpener Pen Eraser Ruler Protector

Name of the items

Mathematics 1 193

Observe the following figures and complete the
given boxes

How many apples are there ? Mathematics 1
How many bananas are there?
How many strawberries are there?
How many mangoes are there?
How many oranges are there?
How many pears are there?

194

Let's represent these items in a pictograph.
9

8

7

6

Number of fruits 5

4

3

2

1

Apples Bananas Strawberries Mangoes Oranges Pears

Name of the fruits

Mathematics 1 195

Study the Pictograph
8

7

Number of persons 6

5

4

3

2

1

Boys Girls Men Women Old men

Name of the fruits

How many boys are there ?

How many girls are there?

How many men are there?

How many women are there?

How many old men are there? Mathematics 1

196