Year 6 Adding and Subtracting Decimals Worksheet — Level 1 — Practice Set 3 — Answers
Answer sheet with worked solutions for the Year 6 decimals worksheet.
Year 6 Adding and Subtracting Decimals Worksheet — Level 1 — Practice Set 3 — Answers
Line up the decimal points before you add or subtract.
1.
16.5
−3.0
Answer: 13.5
- Line up the decimal points
- 16.5 − 3.0 = 13.5
2.
8.5
−5.3
Answer: 3.2
- Line up the decimal points
- 8.5 − 5.3 = 3.2
3.
25.8
−16.0
Answer: 9.8
- Line up the decimal points
- 25.8 − 16.0 = 9.8
4.
18.3
+31.8
Answer: 50.1
- Line up the decimal points
- 18.3 + 31.8 = 50.1
5.
3.0
+2.4
Answer: 5.4
- Line up the decimal points
- 3.0 + 2.4 = 5.4
6.
39.3
−10.3
Answer: 29.0
- Line up the decimal points
- 39.3 − 10.3 = 29.0
7.
16.8
+15.0
Answer: 31.8
- Line up the decimal points
- 16.8 + 15.0 = 31.8
8.
27.6
+11.4
Answer: 39.0
- Line up the decimal points
- 27.6 + 11.4 = 39.0
9.
8.5
+13.4
Answer: 21.9
- Line up the decimal points
- 8.5 + 13.4 = 21.9
10.
25.3
−23.6
Answer: 1.7
- Line up the decimal points
- 25.3 − 23.6 = 1.7
11.
26.4
+12.8
Answer: 39.2
- Line up the decimal points
- 26.4 + 12.8 = 39.2
12.
44.6
−23.9
Answer: 20.7
- Line up the decimal points
- 44.6 − 23.9 = 20.7
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.