Work through the levels in order. Type your answer and press Check — open the worked solution if you get stuck. Answers like -6, 3/4 or 0.25 are typed exactly as shown.
Level 1 · Warm-up
1 Convert 2 L to millilitres.
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2 × 1000 = 2000 mL.
2 Convert 6000 cm3 to litres.
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6000 ÷ 1000 = 6 L.
3 Convert 3 m to centimetres.
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3 × 100 = 300 cm.
Level 2 · Core
4 How many cm2 are in 5 m2?
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5 × 10000 = 50000 cm2.
5 A tank is 80 cm × 50 cm × 40 cm. Capacity in litres?
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160,000 cm3 ÷ 1000 = 160 L.
6 A pool holds 8 m3 of water. How many litres is that?
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8 × 1000 = 8000 L.
Level 3 · Challenge
7 A box is 1.5 m × 60 cm × 20 cm. Capacity in litres?
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150 × 60 × 20 = 180,000 cm3 = 180 L.
8 A 4500 L tank fills at 30 L per minute. How many hours does it take?
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4500 ÷ 30 = 150 min = 2.5 hours.
9 A cylindrical tank has radius 50 cm and height 100 cm. Capacity in litres, to the nearest litre? (π ≈ 3.142)
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π × 2500 × 100 = 785,500 cm3 ÷ 1000 ≈ 785 L.