Year 4 Adding and Subtracting Decimals Worksheet — Level 3 — Practice Set 4 — Answers
Answer sheet with worked solutions for the Year 4 decimals worksheet.
Success TutoringWorksheetsAnswer sheetYear 4 · Mathematics · DecimalsYear 4 Adding and Subtracting Decimals Worksheet — Level 3 — Practice Set 4 — Answers
Line up the decimal points before you add or subtract.
1.
128.67
−65.46
Answer: 63.21
- Line up the decimal points
- 128.67 − 65.46 = 63.21
2.
106.62
+37.87
Answer: 144.49
- Line up the decimal points
- 106.62 + 37.87 = 144.49
3.
171.17
+102.33
Answer: 273.50
- Line up the decimal points
- 171.17 + 102.33 = 273.50
4.
33.36
+63.97
Answer: 97.33
- Line up the decimal points
- 33.36 + 63.97 = 97.33
5.
276.28
+173.33
Answer: 449.61
- Line up the decimal points
- 276.28 + 173.33 = 449.61
6.
271.64
+93.19
Answer: 364.83
- Line up the decimal points
- 271.64 + 93.19 = 364.83
7.
263.42
−197.87
Answer: 65.55
- Line up the decimal points
- 263.42 − 197.87 = 65.55
8.
309.15
+67.02
Answer: 376.17
- Line up the decimal points
- 309.15 + 67.02 = 376.17
9.
146.82
−53.84
Answer: 92.98
- Line up the decimal points
- 146.82 − 53.84 = 92.98
10.
188.93
−124.06
Answer: 64.87
- Line up the decimal points
- 188.93 − 124.06 = 64.87
11.
143.44
−35.71
Answer: 107.73
- Line up the decimal points
- 143.44 − 35.71 = 107.73
12.
394.77
+111.09
Answer: 505.86
- Line up the decimal points
- 394.77 + 111.09 = 505.86
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.