Year 7 Adding and Subtracting Decimals Worksheet — Level 3 — Practice Set 2 — Answers
Answer sheet with worked solutions for the Year 7 decimals worksheet.
Success TutoringWorksheetsAnswer sheetYear 7 · Mathematics · DecimalsYear 7 Adding and Subtracting Decimals Worksheet — Level 3 — Practice Set 2 — Answers
Line up the decimal points before you add or subtract.
1.
135.38
+124.62
Answer: 260.00
- Line up the decimal points
- 135.38 + 124.62 = 260.00
2.
150.22
−56.37
Answer: 93.85
- Line up the decimal points
- 150.22 − 56.37 = 93.85
3.
308.32
−45.32
Answer: 263.00
- Line up the decimal points
- 308.32 − 45.32 = 263.00
4.
131.44
−41.44
Answer: 90.00
- Line up the decimal points
- 131.44 − 41.44 = 90.00
5.
114.79
−80.41
Answer: 34.38
- Line up the decimal points
- 114.79 − 80.41 = 34.38
6.
363.68
−94.19
Answer: 269.49
- Line up the decimal points
- 363.68 − 94.19 = 269.49
7.
18.18
−15.69
Answer: 2.49
- Line up the decimal points
- 18.18 − 15.69 = 2.49
8.
18.83
+10.29
Answer: 29.12
- Line up the decimal points
- 18.83 + 10.29 = 29.12
9.
357.71
+139.82
Answer: 497.53
- Line up the decimal points
- 357.71 + 139.82 = 497.53
10.
214.28
+17.64
Answer: 231.92
- Line up the decimal points
- 214.28 + 17.64 = 231.92
11.
307.86
+171.87
Answer: 479.73
- Line up the decimal points
- 307.86 + 171.87 = 479.73
12.
286.54
−46.77
Answer: 239.77
- Line up the decimal points
- 286.54 − 46.77 = 239.77
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.