Year 7 Adding and Subtracting Decimals Worksheet — Level 2 — Practice Set 3 — 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 2 — Practice Set 3 — Answers
Line up the decimal points before you add or subtract.
1.
55.91
+4.97
Answer: 60.88
- Line up the decimal points
- 55.91 + 4.97 = 60.88
2.
47.50
−11.94
Answer: 35.56
- Line up the decimal points
- 47.50 − 11.94 = 35.56
3.
39.01
−24.73
Answer: 14.28
- Line up the decimal points
- 39.01 − 24.73 = 14.28
4.
33.36
−23.85
Answer: 9.51
- Line up the decimal points
- 33.36 − 23.85 = 9.51
5.
50.12
+17.84
Answer: 67.96
- Line up the decimal points
- 50.12 + 17.84 = 67.96
6.
56.21
+6.00
Answer: 62.21
- Line up the decimal points
- 56.21 + 6.00 = 62.21
7.
8.63
+21.04
Answer: 29.67
- Line up the decimal points
- 8.63 + 21.04 = 29.67
8.
25.61
+4.52
Answer: 30.13
- Line up the decimal points
- 25.61 + 4.52 = 30.13
9.
59.51
−40.81
Answer: 18.70
- Line up the decimal points
- 59.51 − 40.81 = 18.70
10.
55.96
−27.13
Answer: 28.83
- Line up the decimal points
- 55.96 − 27.13 = 28.83
11.
12.53
+24.50
Answer: 37.03
- Line up the decimal points
- 12.53 + 24.50 = 37.03
12.
29.64
−29.10
Answer: 0.54
- Line up the decimal points
- 29.64 − 29.10 = 0.54
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.