Year 5 Adding and Subtracting Decimals Worksheet — Level 1 — Answers
Answer sheet with worked solutions for the Year 5 decimals worksheet.
Year 5 Adding and Subtracting Decimals Worksheet — Level 1 — Answers
Line up the decimal points before you add or subtract.
1.
34.4
−30.7
Answer: 3.7
- Line up the decimal points
- 34.4 − 30.7 = 3.7
2.
40.5
−4.6
Answer: 35.9
- Line up the decimal points
- 40.5 − 4.6 = 35.9
3.
16.0
−14.4
Answer: 1.6
- Line up the decimal points
- 16.0 − 14.4 = 1.6
4.
32.5
+18.9
Answer: 51.4
- Line up the decimal points
- 32.5 + 18.9 = 51.4
5.
26.4
−12.4
Answer: 14.0
- Line up the decimal points
- 26.4 − 12.4 = 14.0
6.
31.1
−18.8
Answer: 12.3
- Line up the decimal points
- 31.1 − 18.8 = 12.3
7.
35.5
+8.9
Answer: 44.4
- Line up the decimal points
- 35.5 + 8.9 = 44.4
8.
33.4
−27.9
Answer: 5.5
- Line up the decimal points
- 33.4 − 27.9 = 5.5
9.
24.3
+38.3
Answer: 62.6
- Line up the decimal points
- 24.3 + 38.3 = 62.6
10.
39.0
−13.2
Answer: 25.8
- Line up the decimal points
- 39.0 − 13.2 = 25.8
11.
52.0
−26.5
Answer: 25.5
- Line up the decimal points
- 52.0 − 26.5 = 25.5
12.
8.0
+40.5
Answer: 48.5
- Line up the decimal points
- 8.0 + 40.5 = 48.5
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.