5th Grade Adding and Subtracting Decimals Worksheet — Level 3 — Practice Set 3 — Answers
Answer sheet with worked solutions for the 5th Grade decimals worksheet.
Success TutoringWorksheetsAnswer sheet5th Grade · Mathematics · Decimals5th Grade Adding and Subtracting Decimals Worksheet — Level 3 — Practice Set 3 — Answers
Line up the decimal points before you add or subtract.
1.
231.85
+82.64
Answer: 314.49
- Line up the decimal points
- 231.85 + 82.64 = 314.49
2.
365.81
+99.51
Answer: 465.32
- Line up the decimal points
- 365.81 + 99.51 = 465.32
3.
269.05
−108.36
Answer: 160.69
- Line up the decimal points
- 269.05 − 108.36 = 160.69
4.
197.52
−197.38
Answer: 0.14
- Line up the decimal points
- 197.52 − 197.38 = 0.14
5.
329.15
+6.49
Answer: 335.64
- Line up the decimal points
- 329.15 + 6.49 = 335.64
6.
157.38
+69.30
Answer: 226.68
- Line up the decimal points
- 157.38 + 69.30 = 226.68
7.
64.84
+191.92
Answer: 256.76
- Line up the decimal points
- 64.84 + 191.92 = 256.76
8.
346.86
+75.68
Answer: 422.54
- Line up the decimal points
- 346.86 + 75.68 = 422.54
9.
199.97
+105.65
Answer: 305.62
- Line up the decimal points
- 199.97 + 105.65 = 305.62
10.
107.64
−26.20
Answer: 81.44
- Line up the decimal points
- 107.64 − 26.20 = 81.44
11.
266.03
+13.69
Answer: 279.72
- Line up the decimal points
- 266.03 + 13.69 = 279.72
12.
148.57
+27.28
Answer: 175.85
- Line up the decimal points
- 148.57 + 27.28 = 175.85
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.