Year 7 Adding and Subtracting Decimals Worksheet — Level 2 — 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 2 — Practice Set 2 — Answers
Line up the decimal points before you add or subtract.
1.
30.13
−16.97
Answer: 13.16
- Line up the decimal points
- 30.13 − 16.97 = 13.16
2.
54.29
+36.75
Answer: 91.04
- Line up the decimal points
- 54.29 + 36.75 = 91.04
3.
26.37
+38.89
Answer: 65.26
- Line up the decimal points
- 26.37 + 38.89 = 65.26
4.
49.64
+11.11
Answer: 60.75
- Line up the decimal points
- 49.64 + 11.11 = 60.75
5.
39.65
−28.56
Answer: 11.09
- Line up the decimal points
- 39.65 − 28.56 = 11.09
6.
9.99
+6.90
Answer: 16.89
- Line up the decimal points
- 9.99 + 6.90 = 16.89
7.
37.19
+37.49
Answer: 74.68
- Line up the decimal points
- 37.19 + 37.49 = 74.68
8.
43.64
−16.72
Answer: 26.92
- Line up the decimal points
- 43.64 − 16.72 = 26.92
9.
2.81
+3.31
Answer: 6.12
- Line up the decimal points
- 2.81 + 3.31 = 6.12
10.
33.35
+37.68
Answer: 71.03
- Line up the decimal points
- 33.35 + 37.68 = 71.03
11.
32.44
−25.89
Answer: 6.55
- Line up the decimal points
- 32.44 − 25.89 = 6.55
12.
42.89
+8.88
Answer: 51.77
- Line up the decimal points
- 42.89 + 8.88 = 51.77
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.