Year 7 Adding and Subtracting Decimals Worksheet — Level 2 — Practice Set 3 — 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 2 — Practice Set 3 — Answers
Line up the decimal points before you add or subtract.
1.
19.19
−15.50
Answer: 3.69
- Line up the decimal points
- 19.19 − 15.50 = 3.69
2.
30.03
+11.51
Answer: 41.54
- Line up the decimal points
- 30.03 + 11.51 = 41.54
3.
32.95
−30.19
Answer: 2.76
- Line up the decimal points
- 32.95 − 30.19 = 2.76
4.
11.10
−7.14
Answer: 3.96
- Line up the decimal points
- 11.10 − 7.14 = 3.96
5.
30.24
−12.48
Answer: 17.76
- Line up the decimal points
- 30.24 − 12.48 = 17.76
6.
30.05
+35.21
Answer: 65.26
- Line up the decimal points
- 30.05 + 35.21 = 65.26
7.
19.56
−1.44
Answer: 18.12
- Line up the decimal points
- 19.56 − 1.44 = 18.12
8.
33.74
−9.46
Answer: 24.28
- Line up the decimal points
- 33.74 − 9.46 = 24.28
9.
28.04
−7.11
Answer: 20.93
- Line up the decimal points
- 28.04 − 7.11 = 20.93
10.
14.96
−3.74
Answer: 11.22
- Line up the decimal points
- 14.96 − 3.74 = 11.22
11.
27.01
−18.02
Answer: 8.99
- Line up the decimal points
- 27.01 − 18.02 = 8.99
12.
29.44
−9.31
Answer: 20.13
- Line up the decimal points
- 29.44 − 9.31 = 20.13
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.