Year 7 Adding and Subtracting Decimals Worksheet — Level 1 — 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 1 — Practice Set 2 — Answers
Line up the decimal points before you add or subtract.
1.
3.9
+13.1
Answer: 17.0
- Line up the decimal points
- 3.9 + 13.1 = 17.0
2.
32.8
+11.3
Answer: 44.1
- Line up the decimal points
- 32.8 + 11.3 = 44.1
3.
14.4
−11.0
Answer: 3.4
- Line up the decimal points
- 14.4 − 11.0 = 3.4
4.
23.7
−20.4
Answer: 3.3
- Line up the decimal points
- 23.7 − 20.4 = 3.3
5.
41.6
−2.5
Answer: 39.1
- Line up the decimal points
- 41.6 − 2.5 = 39.1
6.
48.4
+8.0
Answer: 56.4
- Line up the decimal points
- 48.4 + 8.0 = 56.4
7.
32.6
−27.7
Answer: 4.9
- Line up the decimal points
- 32.6 − 27.7 = 4.9
8.
58.4
+30.2
Answer: 88.6
- Line up the decimal points
- 58.4 + 30.2 = 88.6
9.
20.7
+21.0
Answer: 41.7
- Line up the decimal points
- 20.7 + 21.0 = 41.7
10.
44.1
−18.4
Answer: 25.7
- Line up the decimal points
- 44.1 − 18.4 = 25.7
11.
1.7
+24.2
Answer: 25.9
- Line up the decimal points
- 1.7 + 24.2 = 25.9
12.
49.2
+6.6
Answer: 55.8
- Line up the decimal points
- 49.2 + 6.6 = 55.8
Marking tips
- Give credit for correct method even when the final answer slips — the working shows where the thinking went right.
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