Page 82 - Mathematics_Std_4

7. L mL 8. L mL 9. L mL
100 100 330 800 75 426

− 15 900 − 130 600 − 53 532

FOR ONLINE READING ONLY

10. L mL 11. L mL 12. L mL
11 41 20 93 90 180
− 8 74 − 16 37 − 45 382

Word problems involving measurements of volume
Word problems involving measurements of volume highlight the
use of metric units of volume in real-life situations. They reflect

the activities performed every day.

Example

A cow produces 20 litres of milk every day. How many

millilitres of milk will the cow produce in 3 days?

Solution

1 Day: 20 litres

= 3 days 3 × = 20 L 60 L

Convert 60 L into millilitres as follows.

1 L =1000 mL

60 L = 60 × 1000 mL

= 60000 mL

So, the cow will produce 60,000 millilitres of milk in 3 days.

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MATHEMATICS STD 4 PB 2024.indd 75