Year 8 Adding and Subtracting Decimals Worksheet — Level 1 — Practice Set 4 — Answers
Answer sheet with worked solutions for the Year 8 decimals worksheet.
Success TutoringWorksheetsAnswer sheetYear 8 · Mathematics · DecimalsYear 8 Adding and Subtracting Decimals Worksheet — Level 1 — Practice Set 4 — Answers
Line up the decimal points before you add or subtract.
1.
49.4
+16.4
Answer: 65.8
- Line up the decimal points
- 49.4 + 16.4 = 65.8
2.
50.9
+6.3
Answer: 57.2
- Line up the decimal points
- 50.9 + 6.3 = 57.2
3.
40.2
−18.7
Answer: 21.5
- Line up the decimal points
- 40.2 − 18.7 = 21.5
4.
38.7
−29.3
Answer: 9.4
- Line up the decimal points
- 38.7 − 29.3 = 9.4
5.
42.6
−31.6
Answer: 11.0
- Line up the decimal points
- 42.6 − 31.6 = 11.0
6.
46.5
+34.7
Answer: 81.2
- Line up the decimal points
- 46.5 + 34.7 = 81.2
7.
30.0
−4.3
Answer: 25.7
- Line up the decimal points
- 30.0 − 4.3 = 25.7
8.
17.1
−10.9
Answer: 6.2
- Line up the decimal points
- 17.1 − 10.9 = 6.2
9.
49.9
+6.9
Answer: 56.8
- Line up the decimal points
- 49.9 + 6.9 = 56.8
10.
20.5
+4.0
Answer: 24.5
- Line up the decimal points
- 20.5 + 4.0 = 24.5
11.
28.0
+35.0
Answer: 63.0
- Line up the decimal points
- 28.0 + 35.0 = 63.0
12.
14.6
−5.9
Answer: 8.7
- Line up the decimal points
- 14.6 − 5.9 = 8.7
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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