Year 5 Adding and Subtracting Decimals Worksheet — Level 3 — Practice Set 2 — 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 2 — Answers
Line up the decimal points before you add or subtract.
1.
207.81
−17.49
Answer: 190.32
- Line up the decimal points
- 207.81 − 17.49 = 190.32
2.
385.47
+129.73
Answer: 515.20
- Line up the decimal points
- 385.47 + 129.73 = 515.20
3.
159.29
+62.26
Answer: 221.55
- Line up the decimal points
- 159.29 + 62.26 = 221.55
4.
277.05
+39.04
Answer: 316.09
- Line up the decimal points
- 277.05 + 39.04 = 316.09
5.
293.45
−28.42
Answer: 265.03
- Line up the decimal points
- 293.45 − 28.42 = 265.03
6.
151.21
−124.15
Answer: 27.06
- Line up the decimal points
- 151.21 − 124.15 = 27.06
7.
37.90
−35.67
Answer: 2.23
- Line up the decimal points
- 37.90 − 35.67 = 2.23
8.
250.96
−137.37
Answer: 113.59
- Line up the decimal points
- 250.96 − 137.37 = 113.59
9.
235.09
+49.34
Answer: 284.43
- Line up the decimal points
- 235.09 + 49.34 = 284.43
10.
197.36
−72.23
Answer: 125.13
- Line up the decimal points
- 197.36 − 72.23 = 125.13
11.
347.96
+128.38
Answer: 476.34
- Line up the decimal points
- 347.96 + 128.38 = 476.34
12.
63.60
+179.69
Answer: 243.29
- Line up the decimal points
- 63.60 + 179.69 = 243.29
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.