Year 7 Adding and Subtracting Decimals Worksheet — Level 3 — Practice Set 2 — Answers
Answer sheet with worked solutions for the Year 7 decimals worksheet.
Success TutoringWorksheetsAnswer sheetYear 7 · Mathematics · DecimalsYear 7 Adding and Subtracting Decimals Worksheet — Level 3 — Practice Set 2 — Answers
Line up the decimal points before you add or subtract.
1.
119.77
−114.12
Answer: 5.65
- Line up the decimal points
- 119.77 − 114.12 = 5.65
2.
214.17
−30.54
Answer: 183.63
- Line up the decimal points
- 214.17 − 30.54 = 183.63
3.
362.21
−49.40
Answer: 312.81
- Line up the decimal points
- 362.21 − 49.40 = 312.81
4.
175.39
−146.06
Answer: 29.33
- Line up the decimal points
- 175.39 − 146.06 = 29.33
5.
129.23
−85.09
Answer: 44.14
- Line up the decimal points
- 129.23 − 85.09 = 44.14
6.
41.03
+57.29
Answer: 98.32
- Line up the decimal points
- 41.03 + 57.29 = 98.32
7.
242.27
+88.77
Answer: 331.04
- Line up the decimal points
- 242.27 + 88.77 = 331.04
8.
186.88
−150.76
Answer: 36.12
- Line up the decimal points
- 186.88 − 150.76 = 36.12
9.
203.43
+184.67
Answer: 388.10
- Line up the decimal points
- 203.43 + 184.67 = 388.10
10.
170.32
−167.16
Answer: 3.16
- Line up the decimal points
- 170.32 − 167.16 = 3.16
11.
320.07
−190.73
Answer: 129.34
- Line up the decimal points
- 320.07 − 190.73 = 129.34
12.
200.56
+104.53
Answer: 305.09
- Line up the decimal points
- 200.56 + 104.53 = 305.09
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.