Year 5 Adding and Subtracting Decimals Worksheet — Level 3 — Practice Set 3 — 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 3 — Answers
Line up the decimal points before you add or subtract.
1.
320.97
+24.10
Answer: 345.07
- Line up the decimal points
- 320.97 + 24.10 = 345.07
2.
327.66
+59.95
Answer: 387.61
- Line up the decimal points
- 327.66 + 59.95 = 387.61
3.
396.76
+78.55
Answer: 475.31
- Line up the decimal points
- 396.76 + 78.55 = 475.31
4.
222.76
−44.11
Answer: 178.65
- Line up the decimal points
- 222.76 − 44.11 = 178.65
5.
269.72
+25.75
Answer: 295.47
- Line up the decimal points
- 269.72 + 25.75 = 295.47
6.
262.15
−136.44
Answer: 125.71
- Line up the decimal points
- 262.15 − 136.44 = 125.71
7.
339.78
−28.84
Answer: 310.94
- Line up the decimal points
- 339.78 − 28.84 = 310.94
8.
141.32
−63.93
Answer: 77.39
- Line up the decimal points
- 141.32 − 63.93 = 77.39
9.
208.00
+3.78
Answer: 211.78
- Line up the decimal points
- 208.00 + 3.78 = 211.78
10.
123.10
−48.06
Answer: 75.04
- Line up the decimal points
- 123.10 − 48.06 = 75.04
11.
109.85
+36.44
Answer: 146.29
- Line up the decimal points
- 109.85 + 36.44 = 146.29
12.
364.75
−58.57
Answer: 306.18
- Line up the decimal points
- 364.75 − 58.57 = 306.18
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.