Year 6 Adding and Subtracting Decimals Worksheet — Level 3 — Answers
Answer sheet with worked solutions for the Year 6 decimals worksheet.
Year 6 Adding and Subtracting Decimals Worksheet — Level 3 — Answers
Line up the decimal points before you add or subtract.
1.
163.62
+90.08
Answer: 253.70
- Line up the decimal points
- 163.62 + 90.08 = 253.70
2.
158.40
+55.50
Answer: 213.90
- Line up the decimal points
- 158.40 + 55.50 = 213.90
3.
153.30
−11.26
Answer: 142.04
- Line up the decimal points
- 153.30 − 11.26 = 142.04
4.
49.94
+97.58
Answer: 147.52
- Line up the decimal points
- 49.94 + 97.58 = 147.52
5.
224.50
−1.06
Answer: 223.44
- Line up the decimal points
- 224.50 − 1.06 = 223.44
6.
229.19
+126.51
Answer: 355.70
- Line up the decimal points
- 229.19 + 126.51 = 355.70
7.
48.36
+125.90
Answer: 174.26
- Line up the decimal points
- 48.36 + 125.90 = 174.26
8.
126.18
+83.21
Answer: 209.39
- Line up the decimal points
- 126.18 + 83.21 = 209.39
9.
136.93
−124.16
Answer: 12.77
- Line up the decimal points
- 136.93 − 124.16 = 12.77
10.
184.55
−96.67
Answer: 87.88
- Line up the decimal points
- 184.55 − 96.67 = 87.88
11.
77.87
+99.00
Answer: 176.87
- Line up the decimal points
- 77.87 + 99.00 = 176.87
12.
291.17
+135.59
Answer: 426.76
- Line up the decimal points
- 291.17 + 135.59 = 426.76
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.