Year 5 Adding and Subtracting Decimals Worksheet — Level 1 — Practice Set 2 — Answers
Answer sheet with worked solutions for the Year 5 decimals worksheet.
Year 5 Adding and Subtracting Decimals Worksheet — Level 1 — Practice Set 2 — Answers
Line up the decimal points before you add or subtract.
1.
47.6
+29.0
Answer: 76.6
- Line up the decimal points
- 47.6 + 29.0 = 76.6
2.
47.8
+40.2
Answer: 88.0
- Line up the decimal points
- 47.8 + 40.2 = 88.0
3.
5.6
+31.9
Answer: 37.5
- Line up the decimal points
- 5.6 + 31.9 = 37.5
4.
25.4
+17.9
Answer: 43.3
- Line up the decimal points
- 25.4 + 17.9 = 43.3
5.
16.4
+24.3
Answer: 40.7
- Line up the decimal points
- 16.4 + 24.3 = 40.7
6.
7.9
+30.8
Answer: 38.7
- Line up the decimal points
- 7.9 + 30.8 = 38.7
7.
30.2
+5.2
Answer: 35.4
- Line up the decimal points
- 30.2 + 5.2 = 35.4
8.
30.6
+6.1
Answer: 36.7
- Line up the decimal points
- 30.6 + 6.1 = 36.7
9.
31.8
+22.0
Answer: 53.8
- Line up the decimal points
- 31.8 + 22.0 = 53.8
10.
34.9
+37.1
Answer: 72.0
- Line up the decimal points
- 34.9 + 37.1 = 72.0
11.
18.7
−16.7
Answer: 2.0
- Line up the decimal points
- 18.7 − 16.7 = 2.0
12.
36.0
−8.0
Answer: 28.0
- Line up the decimal points
- 36.0 − 8.0 = 28.0
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.