7th Grade Adding and Subtracting Decimals Worksheet — Level 3 — Practice Set 4 — Answers
Answer sheet with worked solutions for the 7th Grade decimals worksheet.
7th Grade Adding and Subtracting Decimals Worksheet — Level 3 — Practice Set 4 — Answers
Line up the decimal points before you add or subtract.
1.
380.17
+24.08
Answer: 404.25
- Line up the decimal points
- 380.17 + 24.08 = 404.25
2.
274.98
+43.42
Answer: 318.40
- Line up the decimal points
- 274.98 + 43.42 = 318.40
3.
372.54
+94.01
Answer: 466.55
- Line up the decimal points
- 372.54 + 94.01 = 466.55
4.
8.04
+74.32
Answer: 82.36
- Line up the decimal points
- 8.04 + 74.32 = 82.36
5.
179.50
+119.72
Answer: 299.22
- Line up the decimal points
- 179.50 + 119.72 = 299.22
6.
147.44
+60.18
Answer: 207.62
- Line up the decimal points
- 147.44 + 60.18 = 207.62
7.
167.81
−143.57
Answer: 24.24
- Line up the decimal points
- 167.81 − 143.57 = 24.24
8.
3.75
+129.28
Answer: 133.03
- Line up the decimal points
- 3.75 + 129.28 = 133.03
9.
137.01
+169.87
Answer: 306.88
- Line up the decimal points
- 137.01 + 169.87 = 306.88
10.
329.71
−92.61
Answer: 237.10
- Line up the decimal points
- 329.71 − 92.61 = 237.10
11.
335.01
−67.93
Answer: 267.08
- Line up the decimal points
- 335.01 − 67.93 = 267.08
12.
103.70
+44.06
Answer: 147.76
- Line up the decimal points
- 103.70 + 44.06 = 147.76
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.