Year 7 Adding and Subtracting Decimals Worksheet — Level 1 — Practice Set 4 — Answers
Answer sheet with worked solutions for the Year 7 decimals worksheet.
Year 7 Adding and Subtracting Decimals Worksheet — Level 1 — Practice Set 4 — Answers
Line up the decimal points before you add or subtract.
1.
46.7
−8.3
Answer: 38.4
- Line up the decimal points
- 46.7 − 8.3 = 38.4
2.
55.8
+8.0
Answer: 63.8
- Line up the decimal points
- 55.8 + 8.0 = 63.8
3.
24.2
−8.4
Answer: 15.8
- Line up the decimal points
- 24.2 − 8.4 = 15.8
4.
32.5
−2.2
Answer: 30.3
- Line up the decimal points
- 32.5 − 2.2 = 30.3
5.
26.2
−18.1
Answer: 8.1
- Line up the decimal points
- 26.2 − 18.1 = 8.1
6.
33.5
−32.4
Answer: 1.1
- Line up the decimal points
- 33.5 − 32.4 = 1.1
7.
60.7
−33.4
Answer: 27.3
- Line up the decimal points
- 60.7 − 33.4 = 27.3
8.
19.7
−1.1
Answer: 18.6
- Line up the decimal points
- 19.7 − 1.1 = 18.6
9.
20.1
+5.9
Answer: 26.0
- Line up the decimal points
- 20.1 + 5.9 = 26.0
10.
23.1
−14.8
Answer: 8.3
- Line up the decimal points
- 23.1 − 14.8 = 8.3
11.
34.1
+2.9
Answer: 37.0
- Line up the decimal points
- 34.1 + 2.9 = 37.0
12.
14.8
+22.3
Answer: 37.1
- Line up the decimal points
- 14.8 + 22.3 = 37.1
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.