Year 5 Adding and Subtracting Decimals Worksheet — Level 3 — Practice Set 4 — Answers
Answer sheet with worked solutions for the Year 5 decimals worksheet.
Success TutoringWorksheetsAnswer sheetYear 5 · Mathematics · DecimalsYear 5 Adding and Subtracting Decimals Worksheet — Level 3 — Practice Set 4 — Answers
Line up the decimal points before you add or subtract.
1.
155.89
+69.87
Answer: 225.76
- Line up the decimal points
- 155.89 + 69.87 = 225.76
2.
324.88
+12.57
Answer: 337.45
- Line up the decimal points
- 324.88 + 12.57 = 337.45
3.
236.27
+63.89
Answer: 300.16
- Line up the decimal points
- 236.27 + 63.89 = 300.16
4.
115.21
−29.25
Answer: 85.96
- Line up the decimal points
- 115.21 − 29.25 = 85.96
5.
192.09
−119.84
Answer: 72.25
- Line up the decimal points
- 192.09 − 119.84 = 72.25
6.
180.91
−130.12
Answer: 50.79
- Line up the decimal points
- 180.91 − 130.12 = 50.79
7.
354.69
+66.15
Answer: 420.84
- Line up the decimal points
- 354.69 + 66.15 = 420.84
8.
309.42
−166.05
Answer: 143.37
- Line up the decimal points
- 309.42 − 166.05 = 143.37
9.
159.79
−14.39
Answer: 145.40
- Line up the decimal points
- 159.79 − 14.39 = 145.40
10.
310.52
+115.01
Answer: 425.53
- Line up the decimal points
- 310.52 + 115.01 = 425.53
11.
308.82
−102.44
Answer: 206.38
- Line up the decimal points
- 308.82 − 102.44 = 206.38
12.
181.17
−17.65
Answer: 163.52
- Line up the decimal points
- 181.17 − 17.65 = 163.52
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.