Year 4 Adding and Subtracting Decimals Worksheet — Level 1 — Answers
Answer sheet with worked solutions for the Year 4 decimals worksheet.
Year 4 Adding and Subtracting Decimals Worksheet — Level 1 — Answers
Line up the decimal points before you add or subtract.
1.
59.2
−24.7
Answer: 34.5
- Line up the decimal points
- 59.2 − 24.7 = 34.5
2.
33.5
−28.5
Answer: 5.0
- Line up the decimal points
- 33.5 − 28.5 = 5.0
3.
26.2
−9.0
Answer: 17.2
- Line up the decimal points
- 26.2 − 9.0 = 17.2
4.
9.3
+2.0
Answer: 11.3
- Line up the decimal points
- 9.3 + 2.0 = 11.3
5.
54.7
−10.3
Answer: 44.4
- Line up the decimal points
- 54.7 − 10.3 = 44.4
6.
41.6
+9.2
Answer: 50.8
- Line up the decimal points
- 41.6 + 9.2 = 50.8
7.
28.7
+9.7
Answer: 38.4
- Line up the decimal points
- 28.7 + 9.7 = 38.4
8.
24.5
−14.3
Answer: 10.2
- Line up the decimal points
- 24.5 − 14.3 = 10.2
9.
13.7
−2.8
Answer: 10.9
- Line up the decimal points
- 13.7 − 2.8 = 10.9
10.
46.1
+35.3
Answer: 81.4
- Line up the decimal points
- 46.1 + 35.3 = 81.4
11.
27.8
+24.0
Answer: 51.8
- Line up the decimal points
- 27.8 + 24.0 = 51.8
12.
39.5
−20.4
Answer: 19.1
- Line up the decimal points
- 39.5 − 20.4 = 19.1
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.