Year 7 Adding and Subtracting Decimals Worksheet — Level 3 — Practice Set 4 — 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 4 — Answers
Line up the decimal points before you add or subtract.
1.
205.62
−2.64
Answer: 202.98
- Line up the decimal points
- 205.62 − 2.64 = 202.98
2.
318.25
+93.82
Answer: 412.07
- Line up the decimal points
- 318.25 + 93.82 = 412.07
3.
87.99
+150.11
Answer: 238.10
- Line up the decimal points
- 87.99 + 150.11 = 238.10
4.
22.55
+65.36
Answer: 87.91
- Line up the decimal points
- 22.55 + 65.36 = 87.91
5.
303.11
−124.65
Answer: 178.46
- Line up the decimal points
- 303.11 − 124.65 = 178.46
6.
138.26
−37.98
Answer: 100.28
- Line up the decimal points
- 138.26 − 37.98 = 100.28
7.
108.95
+9.25
Answer: 118.20
- Line up the decimal points
- 108.95 + 9.25 = 118.20
8.
369.66
−128.76
Answer: 240.90
- Line up the decimal points
- 369.66 − 128.76 = 240.90
9.
155.81
+87.20
Answer: 243.01
- Line up the decimal points
- 155.81 + 87.20 = 243.01
10.
16.58
−14.91
Answer: 1.67
- Line up the decimal points
- 16.58 − 14.91 = 1.67
11.
129.12
+194.39
Answer: 323.51
- Line up the decimal points
- 129.12 + 194.39 = 323.51
12.
296.82
+63.27
Answer: 360.09
- Line up the decimal points
- 296.82 + 63.27 = 360.09
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.