Class 5

Chapter 8: Weight and Capacity

We weigh things in grams (g) and kilograms (kg), and measure liquids in millilitres (ml) and litres (l). The big units are 1000 times the small ones: 1 kg = 1000 g, 1 l = 1000 ml.

Learning outcomes

Convert between g/kg and ml/l
Solve word problems with measures

Activities

Kitchen recipe scaling

Worked examples

Read through these first, then try the practice below.

Example 1 — Convert kg to g
How many grams are in 3.5 kg?
Solution: 3.5 × 1000 = 3500 g.
Example 2 — Recipe scaling
A recipe needs 250 ml of milk for 1 person. How much milk for 4 people?
Solution: 250 × 4 = 1000 ml = 1 l.

Self-do practice

Question 1 of 3 · Score 0/0

Convert 2 l to ml.