Year 7 Adding and Subtracting Decimals Worksheet — Level 1 — 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 1 — Practice Set 3 — Answers
Line up the decimal points before you add or subtract.
1.
11.5
+2.0
Answer: 13.5
- Line up the decimal points
- 11.5 + 2.0 = 13.5
2.
42.1
+29.4
Answer: 71.5
- Line up the decimal points
- 42.1 + 29.4 = 71.5
3.
44.3
−30.3
Answer: 14.0
- Line up the decimal points
- 44.3 − 30.3 = 14.0
4.
42.2
+3.0
Answer: 45.2
- Line up the decimal points
- 42.2 + 3.0 = 45.2
5.
25.7
−23.7
Answer: 2.0
- Line up the decimal points
- 25.7 − 23.7 = 2.0
6.
58.4
+40.2
Answer: 98.6
- Line up the decimal points
- 58.4 + 40.2 = 98.6
7.
20.9
−5.3
Answer: 15.6
- Line up the decimal points
- 20.9 − 5.3 = 15.6
8.
6.9
+15.3
Answer: 22.2
- Line up the decimal points
- 6.9 + 15.3 = 22.2
9.
44.7
−29.2
Answer: 15.5
- Line up the decimal points
- 44.7 − 29.2 = 15.5
10.
56.6
+25.9
Answer: 82.5
- Line up the decimal points
- 56.6 + 25.9 = 82.5
11.
42.7
+7.7
Answer: 50.4
- Line up the decimal points
- 42.7 + 7.7 = 50.4
12.
21.4
−5.9
Answer: 15.5
- Line up the decimal points
- 21.4 − 5.9 = 15.5
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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