Year 9 Rounding Decimals Worksheet — Level 3 — Practice Set 3 — Answers
Answer sheet with worked solutions for the Year 9 decimals worksheet.
Success TutoringWorksheetsAnswer sheetYear 9 · Mathematics · DecimalsYear 9 Rounding Decimals Worksheet — Level 3 — Practice Set 3 — Answers
Look at the digit just after the place you are rounding to: 5 or more rounds up, less than 5 rounds down.
1.Round 37.674 to 1 decimal place.
Answer: 37.7
- Look at the hundredths digit: 7
- 5 or more, so round up
2.Round 0.4975 to 1 significant figure.
Answer: 0.5
- Count 1 figure from the first non-zero digit
- The next digit is 9: 5 or more, so round up
3.Round 28.165 to 1 decimal place.
Answer: 28.2
- Look at the hundredths digit: 6
- 5 or more, so round up
4.Round 4.765 to 1 significant figure.
Answer: 5
- Count 1 figure from the first non-zero digit
- The next digit is 7: 5 or more, so round up
5.Round 73.799 to 2 decimal places.
Answer: 73.80
- Look at the thousandths digit: 9
- 5 or more, so round up
6.Round 0.6613 to 2 significant figures.
Answer: 0.66
- Count 2 figures from the first non-zero digit
- The next digit is 1: less than 5, so round down
7.Round 79.635 to 2 decimal places.
Answer: 79.64
- Look at the thousandths digit: 5
- 5 or more, so round up
8.Round 0.03728 to 2 significant figures.
Answer: 0.037
- Count 2 figures from the first non-zero digit
- The next digit is 2: less than 5, so round down
9.Round 73.785 to 1 decimal place.
Answer: 73.8
- Look at the hundredths digit: 8
- 5 or more, so round up
10.Round 0.01968 to 3 significant figures.
Answer: 0.0197
- Count 3 figures from the first non-zero digit
- The next digit is 8: 5 or more, so round up
11.Round 93.543 to the nearest whole number.
Answer: 94
- Look at the tenths digit: 5
- 5 or more, so round up
12.Round 0.03151 to 1 significant figure.
Answer: 0.03
- Count 1 figure from the first non-zero digit
- The next digit is 1: less than 5, so round down
Marking tips
- Give credit for correct method even when the final answer slips — the working shows where the thinking went right.
- For open-ended tasks, use the success criteria as a checklist rather than looking for one "right" answer.
- Celebrate what went well first, then pick one thing to work on next.