Year 5 Adding and Subtracting Decimals Worksheet — Level 1 — Practice Set 4 — Answers
Answer sheet with worked solutions for the Year 5 decimals worksheet.
Year 5 Adding and Subtracting Decimals Worksheet — Level 1 — Practice Set 4 — Answers
Line up the decimal points before you add or subtract.
1.
43.5
−17.3
Answer: 26.2
- Line up the decimal points
- 43.5 − 17.3 = 26.2
2.
17.5
−12.2
Answer: 5.3
- Line up the decimal points
- 17.5 − 12.2 = 5.3
3.
22.3
−18.6
Answer: 3.7
- Line up the decimal points
- 22.3 − 18.6 = 3.7
4.
6.0
−1.8
Answer: 4.2
- Line up the decimal points
- 6.0 − 1.8 = 4.2
5.
14.9
−3.4
Answer: 11.5
- Line up the decimal points
- 14.9 − 3.4 = 11.5
6.
17.5
+12.0
Answer: 29.5
- Line up the decimal points
- 17.5 + 12.0 = 29.5
7.
35.8
+29.0
Answer: 64.8
- Line up the decimal points
- 35.8 + 29.0 = 64.8
8.
8.7
−5.0
Answer: 3.7
- Line up the decimal points
- 8.7 − 5.0 = 3.7
9.
26.2
−14.2
Answer: 12.0
- Line up the decimal points
- 26.2 − 14.2 = 12.0
10.
25.4
−13.5
Answer: 11.9
- Line up the decimal points
- 25.4 − 13.5 = 11.9
11.
28.6
+15.8
Answer: 44.4
- Line up the decimal points
- 28.6 + 15.8 = 44.4
12.
51.6
−9.6
Answer: 42.0
- Line up the decimal points
- 51.6 − 9.6 = 42.0
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.