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.
32.5
−20.2
Answer: 12.3
- Line up the decimal points
- 32.5 − 20.2 = 12.3
2.
10.2
+38.9
Answer: 49.1
- Line up the decimal points
- 10.2 + 38.9 = 49.1
3.
15.4
−5.3
Answer: 10.1
- Line up the decimal points
- 15.4 − 5.3 = 10.1
4.
21.6
−2.5
Answer: 19.1
- Line up the decimal points
- 21.6 − 2.5 = 19.1
5.
28.8
+24.2
Answer: 53.0
- Line up the decimal points
- 28.8 + 24.2 = 53.0
6.
53.9
−37.3
Answer: 16.6
- Line up the decimal points
- 53.9 − 37.3 = 16.6
7.
3.5
+19.5
Answer: 23.0
- Line up the decimal points
- 3.5 + 19.5 = 23.0
8.
19.8
−8.0
Answer: 11.8
- Line up the decimal points
- 19.8 − 8.0 = 11.8
9.
47.3
+13.2
Answer: 60.5
- Line up the decimal points
- 47.3 + 13.2 = 60.5
10.
9.7
−1.3
Answer: 8.4
- Line up the decimal points
- 9.7 − 1.3 = 8.4
11.
48.7
+19.3
Answer: 68.0
- Line up the decimal points
- 48.7 + 19.3 = 68.0
12.
54.9
+17.2
Answer: 72.1
- Line up the decimal points
- 54.9 + 17.2 = 72.1
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.