Lesson 5 of 8 · Grades 3 to 5
Practice: Converting units
Ten conversion questions: metres and centimetres, kilometres and metres, grams and kilograms, litres and millilitres, and the customary facts for feet, yards, pounds and ounces.
How to use this page
This page gives you ten more questions on the same idea as the lesson "Converting units". Work through them at your own speed. Write your answer down or say it out loud before you open the answer box, so you give yourself a real chance to think.
If a question feels hard, go back to the lesson and look at the worked example again. Getting a question wrong is useful; it shows you the part that needs one more look.
Practice questions
Answer all ten questions in your notebook or in your head. Then open each answer to check your work.
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Convert 9 metres to centimetres.
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900 cm. Multiply by 100: 9 × 100 = 900 cm.
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Convert 5 kilometres to metres.
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5,000 m. Multiply by 1,000: 5 × 1,000 = 5,000 m.
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Convert 8,000 grams to kilograms.
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8 kg. Divide by 1,000: 8,000 ÷ 1,000 = 8 kg.
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Convert 12 litres to millilitres.
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12,000 mL. Multiply by 1,000: 12 × 1,000 = 12,000 mL.
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Convert 4 pounds to ounces.
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64 oz. Multiply by 16: 4 × 16 = 64 oz.
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Convert 5 yards to feet.
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15 ft. Multiply by 3: 5 × 3 = 15 ft.
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Convert 72 inches to feet.
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6 ft. Divide by 12: 72 ÷ 12 = 6 ft.
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Convert 2 kilometres to centimetres.
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200,000 cm. 2 km is 2,000 m, and 2,000 × 100 = 200,000 cm.
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Convert 2,000 millilitres to litres.
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2 L. Divide by 1,000: 2,000 ÷ 1,000 = 2 L.
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Convert 5 feet 6 inches to inches.
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66 in. 5 ft is 60 in, and 60 + 6 = 66 in.