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.
126.93
+182.29
Answer: 309.22
- Line up the decimal points
- 126.93 + 182.29 = 309.22
2.
339.98
+179.76
Answer: 519.74
- Line up the decimal points
- 339.98 + 179.76 = 519.74
3.
196.07
−87.34
Answer: 108.73
- Line up the decimal points
- 196.07 − 87.34 = 108.73
4.
149.04
−74.43
Answer: 74.61
- Line up the decimal points
- 149.04 − 74.43 = 74.61
5.
234.19
−195.54
Answer: 38.65
- Line up the decimal points
- 234.19 − 195.54 = 38.65
6.
12.29
+162.24
Answer: 174.53
- Line up the decimal points
- 12.29 + 162.24 = 174.53
7.
287.55
+161.44
Answer: 448.99
- Line up the decimal points
- 287.55 + 161.44 = 448.99
8.
146.02
−1.60
Answer: 144.42
- Line up the decimal points
- 146.02 − 1.60 = 144.42
9.
97.44
−34.23
Answer: 63.21
- Line up the decimal points
- 97.44 − 34.23 = 63.21
10.
294.13
−196.70
Answer: 97.43
- Line up the decimal points
- 294.13 − 196.70 = 97.43
11.
303.62
−197.39
Answer: 106.23
- Line up the decimal points
- 303.62 − 197.39 = 106.23
12.
73.65
+79.32
Answer: 152.97
- Line up the decimal points
- 73.65 + 79.32 = 152.97
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.