Year 8 Adding and Subtracting Decimals Worksheet — Level 2 — Practice Set 2 — Answers
Answer sheet with worked solutions for the Year 8 decimals worksheet.
Success TutoringWorksheetsAnswer sheetYear 8 · Mathematics · DecimalsYear 8 Adding and Subtracting Decimals Worksheet — Level 2 — Practice Set 2 — Answers
Line up the decimal points before you add or subtract.
1.
49.17
+6.88
Answer: 56.05
- Line up the decimal points
- 49.17 + 6.88 = 56.05
2.
42.39
−36.35
Answer: 6.04
- Line up the decimal points
- 42.39 − 36.35 = 6.04
3.
46.02
−39.45
Answer: 6.57
- Line up the decimal points
- 46.02 − 39.45 = 6.57
4.
50.03
+38.79
Answer: 88.82
- Line up the decimal points
- 50.03 + 38.79 = 88.82
5.
60.93
+33.95
Answer: 94.88
- Line up the decimal points
- 60.93 + 33.95 = 94.88
6.
29.95
+20.15
Answer: 50.10
- Line up the decimal points
- 29.95 + 20.15 = 50.10
7.
60.62
−31.39
Answer: 29.23
- Line up the decimal points
- 60.62 − 31.39 = 29.23
8.
17.99
−16.72
Answer: 1.27
- Line up the decimal points
- 17.99 − 16.72 = 1.27
9.
7.73
+13.31
Answer: 21.04
- Line up the decimal points
- 7.73 + 13.31 = 21.04
10.
26.68
−11.00
Answer: 15.68
- Line up the decimal points
- 26.68 − 11.00 = 15.68
11.
43.53
+25.42
Answer: 68.95
- Line up the decimal points
- 43.53 + 25.42 = 68.95
12.
50.78
−22.11
Answer: 28.67
- Line up the decimal points
- 50.78 − 22.11 = 28.67
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.