Year 5 Adding and Subtracting Decimals Worksheet — Level 3 — Answers
Answer sheet with worked solutions for the Year 5 decimals worksheet.
Year 5 Adding and Subtracting Decimals Worksheet — Level 3 — Answers
Line up the decimal points before you add or subtract.
1.
252.42
+102.28
Answer: 354.70
- Line up the decimal points
- 252.42 + 102.28 = 354.70
2.
186.48
−135.10
Answer: 51.38
- Line up the decimal points
- 186.48 − 135.10 = 51.38
3.
333.60
−43.96
Answer: 289.64
- Line up the decimal points
- 333.60 − 43.96 = 289.64
4.
313.00
−90.02
Answer: 222.98
- Line up the decimal points
- 313.00 − 90.02 = 222.98
5.
118.67
−39.48
Answer: 79.19
- Line up the decimal points
- 118.67 − 39.48 = 79.19
6.
272.40
−156.87
Answer: 115.53
- Line up the decimal points
- 272.40 − 156.87 = 115.53
7.
300.59
+66.43
Answer: 367.02
- Line up the decimal points
- 300.59 + 66.43 = 367.02
8.
127.91
+169.62
Answer: 297.53
- Line up the decimal points
- 127.91 + 169.62 = 297.53
9.
89.00
−35.07
Answer: 53.93
- Line up the decimal points
- 89.00 − 35.07 = 53.93
10.
81.85
+96.01
Answer: 177.86
- Line up the decimal points
- 81.85 + 96.01 = 177.86
11.
283.52
+95.85
Answer: 379.37
- Line up the decimal points
- 283.52 + 95.85 = 379.37
12.
277.83
−94.25
Answer: 183.58
- Line up the decimal points
- 277.83 − 94.25 = 183.58
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.