7th Grade Adding and Subtracting Decimals Worksheet — Level 3 — Practice Set 2 — Answers
Answer sheet with worked solutions for the 7th Grade decimals worksheet.
Success TutoringWorksheetsAnswer sheet7th Grade · Mathematics · Decimals7th Grade Adding and Subtracting Decimals Worksheet — Level 3 — Practice Set 2 — Answers
Line up the decimal points before you add or subtract.
1.
241.60
+132.08
Answer: 373.68
- Line up the decimal points
- 241.60 + 132.08 = 373.68
2.
319.10
+179.36
Answer: 498.46
- Line up the decimal points
- 319.10 + 179.36 = 498.46
3.
132.15
−10.07
Answer: 122.08
- Line up the decimal points
- 132.15 − 10.07 = 122.08
4.
287.71
+64.51
Answer: 352.22
- Line up the decimal points
- 287.71 + 64.51 = 352.22
5.
120.22
+125.77
Answer: 245.99
- Line up the decimal points
- 120.22 + 125.77 = 245.99
6.
59.13
+136.57
Answer: 195.70
- Line up the decimal points
- 59.13 + 136.57 = 195.70
7.
178.29
−29.14
Answer: 149.15
- Line up the decimal points
- 178.29 − 29.14 = 149.15
8.
95.43
−92.87
Answer: 2.56
- Line up the decimal points
- 95.43 − 92.87 = 2.56
9.
341.88
−170.66
Answer: 171.22
- Line up the decimal points
- 341.88 − 170.66 = 171.22
10.
398.13
−115.14
Answer: 282.99
- Line up the decimal points
- 398.13 − 115.14 = 282.99
11.
237.18
+140.53
Answer: 377.71
- Line up the decimal points
- 237.18 + 140.53 = 377.71
12.
380.09
+114.66
Answer: 494.75
- Line up the decimal points
- 380.09 + 114.66 = 494.75
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.
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