Year 9 Rounding Decimals Worksheet — Level 1 — 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 1 — 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 27.09 to 1 decimal place.
Answer: 27.1
- Look at the hundredths digit: 9
- 5 or more, so round up
2.Round 640.4 to the nearest whole number.
Answer: 640
- Look at the tenths digit: 4
- Less than 5, so round down
3.Round 106.1 to the nearest whole number.
Answer: 106
- Look at the tenths digit: 1
- Less than 5, so round down
4.Round 766.1 to the nearest whole number.
Answer: 766
- Look at the tenths digit: 1
- Less than 5, so round down
5.Round 855.5 to the nearest whole number.
Answer: 856
- Look at the tenths digit: 5
- 5 or more, so round up
6.Round 29.44 to 1 decimal place.
Answer: 29.4
- Look at the hundredths digit: 4
- Less than 5, so round down
7.Round 51.16 to 1 decimal place.
Answer: 51.2
- Look at the hundredths digit: 6
- 5 or more, so round up
8.Round 136.9 to the nearest whole number.
Answer: 137
- Look at the tenths digit: 9
- 5 or more, so round up
9.Round 57.08 to 1 decimal place.
Answer: 57.1
- Look at the hundredths digit: 8
- 5 or more, so round up
10.Round 80.88 to 1 decimal place.
Answer: 80.9
- Look at the hundredths digit: 8
- 5 or more, so round up
11.Round 81.27 to the nearest whole number.
Answer: 81
- Look at the tenths digit: 2
- Less than 5, so round down
12.Round 826.8 to the nearest whole number.
Answer: 827
- Look at the tenths digit: 8
- 5 or more, so round up
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.