Year 9 Rounding Decimals Worksheet — Level 1 — Answers
Answer sheet with worked solutions for the Year 9 decimals worksheet.
Success TutoringWorksheetsAnswer sheetYear 9 · Mathematics · DecimalsYear 9 Rounding Decimals Worksheet — Level 1 — 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 805.3 to the nearest whole number.
Answer: 805
- Look at the tenths digit: 3
- Less than 5, so round down
2.Round 405.7 to the nearest whole number.
Answer: 406
- Look at the tenths digit: 7
- 5 or more, so round up
3.Round 324.7 to the nearest whole number.
Answer: 325
- Look at the tenths digit: 7
- 5 or more, so round up
4.Round 114.9 to the nearest whole number.
Answer: 115
- Look at the tenths digit: 9
- 5 or more, so round up
5.Round 577.8 to the nearest whole number.
Answer: 578
- Look at the tenths digit: 8
- 5 or more, so round up
6.Round 67.92 to 1 decimal place.
Answer: 67.9
- Look at the hundredths digit: 2
- Less than 5, so round down
7.Round 55.38 to the nearest whole number.
Answer: 55
- Look at the tenths digit: 3
- Less than 5, so round down
8.Round 62.84 to 1 decimal place.
Answer: 62.8
- Look at the hundredths digit: 4
- Less than 5, so round down
9.Round 171.5 to the nearest whole number.
Answer: 172
- Look at the tenths digit: 5
- 5 or more, so round up
10.Round 71.89 to 1 decimal place.
Answer: 71.9
- Look at the hundredths digit: 9
- 5 or more, so round up
11.Round 70.09 to the nearest whole number.
Answer: 70
- Look at the tenths digit: 0
- Less than 5, so round down
12.Round 28.77 to the nearest whole number.
Answer: 29
- Look at the tenths digit: 7
- 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.