Question

1. Add :
a) 16 g 450 mg, 18 g 25 mg, 7 g 700 mg
b) 27 kg 650 g, 26 kg 500 g, 13 kg 500 mg
c) 750 ml, 900 ml, 850 ml
d) 15 1 500 ml, 41 460 ml, 42 1 200 ml
2. Subtract:
a) 33 kg 450 g from 57 kg 250 g
b) 875 kg 600 g- 756 kg 750 g
c) 8 1 500 ml from 32 1 400 ml
d) 461 700 ml - 121 550 ml​

Answer 1

Step-by-step explanation:

Solution:

Method 1 (with conversion into gram):

We know, 1 kg = 1000 grams

Now kg and g are converted into grams before doing subtraction and then we need to follow the simple subtraction process.

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 sum,

25765 g

- 11460 g

14305 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 arranged in different columns and then added like ordinary numbers.

Follow the steps:

(i) kg and g are arranged 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, difference 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 know, 1 kg = 1000 grams

Now kg and g are converted into grams before doing subtraction and then we need to follow the simple subtraction process.

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

Answer 2

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Solution:

Method 1 (with conversion into gram):

We know, 1 kg = 1000 grams

• Now kg and g are converted into grams before doing subtraction and then we need to follow the simple subtraction process.

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 sum,

25765 g

- 11460 g

14305 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 arranged in different columns and then added like ordinary numbers.

Follow the steps:

(i) kg and g are arranged 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, difference 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 know, 1 kg = 1000 grams

• Now kg and g are converted into grams before doing subtraction and then we need to follow the simple subtraction process.

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