Year 4 Adding and Subtracting Decimals Worksheet — Level 1 — Practice Set 2 — Answers
Answer sheet with worked solutions for the Year 4 decimals worksheet.
Success TutoringWorksheetsAnswer sheetYear 4 · Mathematics · DecimalsYear 4 Adding and Subtracting Decimals Worksheet — Level 1 — Practice Set 2 — Answers
Line up the decimal points before you add or subtract.
1.
35.5
+36.3
Answer: 71.8
- Line up the decimal points
- 35.5 + 36.3 = 71.8
2.
30.7
−23.6
Answer: 7.1
- Line up the decimal points
- 30.7 − 23.6 = 7.1
3.
53.9
−23.9
Answer: 30.0
- Line up the decimal points
- 53.9 − 23.9 = 30.0
4.
13.3
−9.7
Answer: 3.6
- Line up the decimal points
- 13.3 − 9.7 = 3.6
5.
54.0
+7.7
Answer: 61.7
- Line up the decimal points
- 54.0 + 7.7 = 61.7
6.
3.5
+24.7
Answer: 28.2
- Line up the decimal points
- 3.5 + 24.7 = 28.2
7.
50.9
−12.1
Answer: 38.8
- Line up the decimal points
- 50.9 − 12.1 = 38.8
8.
38.8
+25.0
Answer: 63.8
- Line up the decimal points
- 38.8 + 25.0 = 63.8
9.
51.5
+8.2
Answer: 59.7
- Line up the decimal points
- 51.5 + 8.2 = 59.7
10.
27.3
+6.9
Answer: 34.2
- Line up the decimal points
- 27.3 + 6.9 = 34.2
11.
28.6
+24.0
Answer: 52.6
- Line up the decimal points
- 28.6 + 24.0 = 52.6
12.
37.8
+16.9
Answer: 54.7
- Line up the decimal points
- 37.8 + 16.9 = 54.7
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.