Page 151 - Revised Maths Wisdom Class - 3

Capacity 149

● To convert ‘litres and millilitres’ into millilitres, multiply the number of litres by 1000
and add it to the number of millilitres. For example,

6 L 250 mL = (6 × 1000) mL + 250 mL = 6000 mL + 250 mL = 6250 mL.

● To convert millilitres into litres and millilitres, separate the thousands and write the
answer. For example,

5820 mL

= 5000 mL + 820 mL = 5 L + 820 mL = 5 L 820 mL (1000 mL = 1 L)

Exercise 12A
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1 Fill the appropriate unit (L or mL) to show the capacity of:

(a) Water in a tank (b) A sachet of shampoo

(c) Nail paint in a bott le (d) Diesel fi lled in car

2 Convert the following into millilitres.
(a) 7 L (b) 2 L (c) 3 L 800 mL (d) 1 L 1 mL

(e) 5 L 350 mL (f) 6 L 50 mL (g) 9 L (h) 8 L 250 mL

3 Convert the following into litres and millilitres.

(a) 3000 mL (b) 6500 mL (c) 2379 mL (d) 5020 mL

(e) 8000 mL (f) 3605 mL (g) 1984 mL (h) 3580 mL

Addition and Subtraction of Capacities

To add or subtract given measures of capacities, arrange them in columns of L and mL
and add them separately.

For example,

L mL

L mL L mL 9

1 1 1 3 10 11
9 2 5 0 8 2 1 7 3 3 4 0 1 0
+ 7 1 7 5 + 1 9 2 4 5 – 1 1 2 5 0

1 6 4 2 5 1 0 1 4 1 8 2 2 7 6 0