Lesson 6 of 8 ยท Grades 4 to 5
Practice: Rounding decimals
Ten questions on rounding decimals to the nearest whole number and the nearest tenth, with a couple of everyday measurement problems.
How to use this page
This page gives you ten more questions on the same idea as the lesson "Rounding decimals". 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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Round 4.2 to the nearest whole number.
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4. The tenths digit is 2, so the ones digit stays.
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Round 6.73 to the nearest tenth.
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6.7. The hundredths digit is 3, so the tenths digit stays.
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Round 0.58 to the nearest tenth.
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0.6. The hundredths digit is 8, so the tenths digit goes up.
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Round 9.45 to the nearest tenth.
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9.5. It is exactly halfway, and the halfway rule sends it up.
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Round 8.06 to the nearest tenth.
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8.1. The hundredths digit is 6, so the tenths digit goes up.
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Round 2.49 to the nearest whole number.
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2. The tenths digit is 4, so the ones digit stays.
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Round 12.95 to the nearest tenth.
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13.0. The hundredths digit is 5, so the number rounds up through the whole numbers.
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A bag weighs 3.68 kg. What is that to the nearest tenth of a kilogram?
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3.7 kg. The hundredths digit is 8, so the tenths digit goes up.
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Which whole number is 4.5 rounded to?
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5. It is exactly halfway, and the halfway rule sends it up.
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A runner takes 11.38 seconds. Round that to the nearest tenth of a second.
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11.4 seconds. The hundredths digit is 8, so the tenths digit goes up.