In subtraction of mass we will find out how to discover the

distinction in between the systems of mass or weight. While deducting we require to

follow that the systems of mass i.e., kg and gram are transformed into grams

prior to subtraction and after that follow the easy subtraction procedure.

We can deduct systems of mass like regular numbers.

We will find out 2 various approaches to resolve subtraction utilizing the basic system and smaller sized system of mass. Trainees can practice both the approaches.

**( i)** Subtracting systems with conversion into gram

**( ii)** Subtracting systems without conversion into gram

Worked-out examples on subtraction of mass:

** 1.** ** Subtract 11 kg 460 g from 25 kg 765 g**

** Solution: **

** Method 1 **( with conversion

into gram):

We understand, 1 kg = 1000 grams

Now kg and g are transformed into grams prior to doing subtraction

and after that we require to follow the easy subtraction procedure.

11 kg 460 g = (11 × 1000) g + 460 g = 11000 g + 460 g = 11460

grams

25 kg 765 g = (25 × 1000) g + 765 g = 25000 g + 765 g =

25765 grams

Now amount,

2 5 7 6 5 ** g**

–__ 1 1 4 6 0__** g**

__ 1 4 3 0 5__ ** g**

= 14 kg

305 g

** Therefore, 25 kg 765
g – 11 kg 460 g = 11 kg 305 g **

** Method 2 **( without.

conversion into gram):

Here kg and g are set up in various columns and after that.

included like regular numbers.

** Follow the actions: **

( i) kg and g are set up in columns

( ii) 765 g – 460 g = 305 g

( iii) 25 kg – 11 kg = 14 kg

** kg g**

25 765

–__ 11 460__

__ 14 305__

= 14 kg 305.

g

** Therefore, distinction.
of 11 kg 460 g from 25 kg 765 g = 14 kg 305 g.
**

** 2.** ** Subtract 24 kg 565 g from 45 kg 225 g**

** Solution: **

** Method 1 **( with conversion.

into gram):

We understand, 1 kg = 1000 grams

Now kg and g are transformed into grams prior to doing subtraction.

and after that we require to follow the easy subtraction procedure.

24 kg 565 g = (24 × 1000) g + 565 g = 24000 g + 565 g = 24565.

grams

45 kg 225 g = (45 × 1000) g + 225 g = 45000 g + 225 g = 45225 grams

Now amount,

45225 ** g**

–__ 24565 __** g**

__ 20660 g__

= 20 kg 660 g

** Therefore, 45 kg 225.
g – 24 kg 565 g = 20 kg 660 g **

** Method 2 **( without.

conversion into gram):

Here kg and g are set up in various columns and after that.

included like regular numbers.

** Follow the actions: **

( i) kg and g are set up in columns

( ii) 225 g < < 565 g, then 225 g – 565 g, so 1 kg from 45 kg is obtained and contributed to 225 g

1 kg + 225 g = 1000 g + 225 g = 1225 g

1225 g – 565 g = 660 ml

( iii) 45 kg decrease into 44 kg

44 kg – 24 kg = 20 kg

** kg g**

45 225

–__ 24 565__

__ 20 660__

= 20 kg 660.

g

** Therefore, distinction.
of 24 kg 565 g from 45 kg 225 g = 20 kg 660 g.
**

** 3.** Subtract 21 kg 370 g from 37 kg 675 g without conversion into gram.

** Solution: **

Here kg and g are set up in various columns and after that.

included like regular numbers (without conversion into gram).

** ** ** kg g**

37 675

–__ 21 370__

__ 16 305__

= 16 kg 305.

g

** Therefore, distinction.
of 21 kg 370 g from 37 kg 675 g = 16 kg 305 g **

** 4. **** Subtract 44 kg 900 g from 105 kg 60 g.**

** Solution: **

Arrange the numbers vertically. First, deduct the grams. As 900 g > > 60 g, we can not deduct. We obtain 1 kg from 105 kg. 105 kg ends up being 104 kg and 60 grams ends up being 1000 + 60 = 1060 g. |

Subtract 900 g from 1060 g.

1060 900 = 160

Write 160 under grams column.

** Subtract kgs. 104 44 = 60 kg Write 60 under kgs column. **

** To deduct weights, compose the number of kg and gin different columns the deduct like regular numbers, beginning from.**

5.

Subtract 22 kg 70 g from 46 kg 90 g.

Solution:

kg g

Subtract 682 kg 541 g from 325 kg 193 g.

a 9

7 12 4 1311

TH

682 541

46 90

-325 193

To

No

-22 70

357 348

24 20

N

Exercise 11G

Subtract the following-

kg

9

kg

9

kg

kg

9

C.

b.

a.

17

74

24 60

68 97

49 70 50

15 –

30

12 23

12 67

26

h.

e.

f.

52 800

g.

73 423

62 125

403 320

19 485

38 365

47 496

-304 743

k.

247 400

490 200

631 189

350 875

153 575

– 296 150

– 518 976

– 114 109

m.

n.

0.

761 02

80 500

518 210 – 109 625

p.

610 582

253 37

60 495

– 108 644

** 140**

11/09/2023 19:01

The above issues on subtraction of mass will assist the trainees to practice the worksheet on deducting the various systems with conversion or without conversion.

Questions and Answers on Subtraction of Mass:

1. Deduct the provided weights:

( i) 76 kg 142 g 24 kg 031 g

( ii) 90 g 622 mg 48 g 503 mg

( iii) 62 kg 579 g 51 kg 560 g

( iv) 60 g 222 mg 34 g 083 mg

( v) 80 kg 885 g 47 kg 000 g

**( vi) 100 kg 529 g 36 kg 610 g **

**( vii) 27 g 021 mg 9 g 300 mg **( viii) 321 kg 450 g 50 kg 290 g

( ix) 560 kg 000 g 110 kg 850 g

Answers:

1.

(i) 52 kg 111 g

( ii) 42 g 119 mg

( iii) 11 kg 19 g

( iv) 26 g 139 mg

( v) 33 kg 885 g

( vi) 63 kg 919 g **( vii) 17 g 721 mg **

**( viii) 271 kg 160 g ****What is Mass?**

**( ix) 449 kg 150 g ****Conversion
of Standard Unit of Mass**

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