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.
312.46
+145.39
Answer: 457.85
- Line up the decimal points
- 312.46 + 145.39 = 457.85
2.
313.49
+16.00
Answer: 329.49
- Line up the decimal points
- 313.49 + 16.00 = 329.49
3.
220.77
−15.72
Answer: 205.05
- Line up the decimal points
- 220.77 − 15.72 = 205.05
4.
283.46
−179.91
Answer: 103.55
- Line up the decimal points
- 283.46 − 179.91 = 103.55
5.
67.68
−17.45
Answer: 50.23
- Line up the decimal points
- 67.68 − 17.45 = 50.23
6.
347.92
+13.87
Answer: 361.79
- Line up the decimal points
- 347.92 + 13.87 = 361.79
7.
225.27
−91.94
Answer: 133.33
- Line up the decimal points
- 225.27 − 91.94 = 133.33
8.
186.52
−108.99
Answer: 77.53
- Line up the decimal points
- 186.52 − 108.99 = 77.53
9.
138.18
−103.71
Answer: 34.47
- Line up the decimal points
- 138.18 − 103.71 = 34.47
10.
266.87
−68.18
Answer: 198.69
- Line up the decimal points
- 266.87 − 68.18 = 198.69
11.
75.65
−4.64
Answer: 71.01
- Line up the decimal points
- 75.65 − 4.64 = 71.01
12.
71.84
+37.07
Answer: 108.91
- Line up the decimal points
- 71.84 + 37.07 = 108.91
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.