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.
192.36
+5.63
Answer: 197.99
- Line up the decimal points
- 192.36 + 5.63 = 197.99
2.
337.49
+174.46
Answer: 511.95
- Line up the decimal points
- 337.49 + 174.46 = 511.95
3.
293.64
−125.94
Answer: 167.70
- Line up the decimal points
- 293.64 − 125.94 = 167.70
4.
107.81
+158.54
Answer: 266.35
- Line up the decimal points
- 107.81 + 158.54 = 266.35
5.
168.33
−36.96
Answer: 131.37
- Line up the decimal points
- 168.33 − 36.96 = 131.37
6.
146.75
−66.46
Answer: 80.29
- Line up the decimal points
- 146.75 − 66.46 = 80.29
7.
334.66
−69.89
Answer: 264.77
- Line up the decimal points
- 334.66 − 69.89 = 264.77
8.
236.37
+61.57
Answer: 297.94
- Line up the decimal points
- 236.37 + 61.57 = 297.94
9.
313.45
−75.15
Answer: 238.30
- Line up the decimal points
- 313.45 − 75.15 = 238.30
10.
77.92
+90.21
Answer: 168.13
- Line up the decimal points
- 77.92 + 90.21 = 168.13
11.
391.45
+195.73
Answer: 587.18
- Line up the decimal points
- 391.45 + 195.73 = 587.18
12.
121.65
+100.09
Answer: 221.74
- Line up the decimal points
- 121.65 + 100.09 = 221.74
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.