Year 8 Adding and Subtracting Decimals Worksheet — Level 2 — Answers
Answer sheet with worked solutions for the Year 8 decimals worksheet.
Year 8 Adding and Subtracting Decimals Worksheet — Level 2 — Answers
Line up the decimal points before you add or subtract.
1.
45.86
+28.85
Answer: 74.71
- Line up the decimal points
- 45.86 + 28.85 = 74.71
2.
8.68
+4.83
Answer: 13.51
- Line up the decimal points
- 8.68 + 4.83 = 13.51
3.
27.75
−14.59
Answer: 13.16
- Line up the decimal points
- 27.75 − 14.59 = 13.16
4.
53.44
+17.42
Answer: 70.86
- Line up the decimal points
- 53.44 + 17.42 = 70.86
5.
22.46
+39.78
Answer: 62.24
- Line up the decimal points
- 22.46 + 39.78 = 62.24
6.
58.67
+16.02
Answer: 74.69
- Line up the decimal points
- 58.67 + 16.02 = 74.69
7.
56.07
+22.06
Answer: 78.13
- Line up the decimal points
- 56.07 + 22.06 = 78.13
8.
13.46
+29.69
Answer: 43.15
- Line up the decimal points
- 13.46 + 29.69 = 43.15
9.
37.31
+39.04
Answer: 76.35
- Line up the decimal points
- 37.31 + 39.04 = 76.35
10.
7.46
+9.00
Answer: 16.46
- Line up the decimal points
- 7.46 + 9.00 = 16.46
11.
3.83
+9.36
Answer: 13.19
- Line up the decimal points
- 3.83 + 9.36 = 13.19
12.
34.64
−26.47
Answer: 8.17
- Line up the decimal points
- 34.64 − 26.47 = 8.17
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.