Year 7 Adding and Subtracting Decimals Worksheet — Level 2 — Answers
Answer sheet with worked solutions for the Year 7 decimals worksheet.
Year 7 Adding and Subtracting Decimals Worksheet — Level 2 — Answers
Line up the decimal points before you add or subtract.
1.
6.42
−5.49
Answer: 0.93
- Line up the decimal points
- 6.42 − 5.49 = 0.93
2.
56.52
+25.64
Answer: 82.16
- Line up the decimal points
- 56.52 + 25.64 = 82.16
3.
22.66
−10.63
Answer: 12.03
- Line up the decimal points
- 22.66 − 10.63 = 12.03
4.
50.56
+2.42
Answer: 52.98
- Line up the decimal points
- 50.56 + 2.42 = 52.98
5.
23.29
+20.37
Answer: 43.66
- Line up the decimal points
- 23.29 + 20.37 = 43.66
6.
29.50
−29.30
Answer: 0.20
- Line up the decimal points
- 29.50 − 29.30 = 0.20
7.
48.99
+21.92
Answer: 70.91
- Line up the decimal points
- 48.99 + 21.92 = 70.91
8.
51.71
+30.06
Answer: 81.77
- Line up the decimal points
- 51.71 + 30.06 = 81.77
9.
50.43
−24.64
Answer: 25.79
- Line up the decimal points
- 50.43 − 24.64 = 25.79
10.
25.92
−14.25
Answer: 11.67
- Line up the decimal points
- 25.92 − 14.25 = 11.67
11.
20.43
+9.14
Answer: 29.57
- Line up the decimal points
- 20.43 + 9.14 = 29.57
12.
37.29
−16.87
Answer: 20.42
- Line up the decimal points
- 37.29 − 16.87 = 20.42
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.