Converting units

Convert between metric units of length, mass, capacity and time

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Try each question. If you're stuck, leave it and come back. The answer key is on the last page.

1
How many centimetres are in 1 metre? A) 10 B) 100 C) 1000 D) 10000
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2
Complete: 3 km = ___ m 3 km = ___ m
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3
Is this statement true or false? 1 kg = 1000 g. A) True B) False
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4
How many millilitres are in 1 litre? A) 10 B) 100 C) 1000 D) 10000
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5
Complete: 2.5 m = ___ cm 2.5 m = ___ cm
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6
Match each measurement to its equivalent. Match each item on the left to one on the right. Left: 2000 g, 500 cm, 1500 ml, 2500 m Right: 2 kg, 5 m, 1.5 L, 2.5 km
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7
How many minutes are in 2.5 hours? A) 120 B) 130 C) 150 D) 180
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8
Complete: 4.7 L = ___ ml 4.7 L = ___ ml
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9
How many mm are in 3.4 cm? A) 3.4 B) 34 C) 340 D) 3400
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10
Is this statement true or false? 750 g is less than 1 kg. A) True B) False
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Answer key

Converting units · for parents and teachers

1
100
1 metre = 100 centimetres.
2
3000
3 km × 1000 = 3000 m.
3
True
1 kilogram = 1000 grams. The statement is true.
4
1000
1 litre = 1000 millilitres.
5
250
2.5 × 100 = 250, so 2.5 m = 250 cm.
6
2000 g → 2 kg; 500 cm → 5 m; 1500 ml → 1.5 L; 2500 m → 2.5 km
2000 g = 2 kg. 500 cm = 5 m. 1500 ml = 1.5 L. 2500 m = 2.5 km.
7
150
2.5 × 60 = 150 minutes.
8
4700
4.7 × 1000 = 4700 ml.
9
34
3.4 × 10 = 34, so 3.4 cm = 34 mm.
10
True
1 kg = 1000 g, and 750 g < 1000 g, so 750 g is less than 1 kg.