Year 5 Adding and Subtracting Decimals Worksheet — Level 1 — Practice Set 3 — Answers
Answer sheet with worked solutions for the Year 5 decimals worksheet.
Success TutoringWorksheetsAnswer sheetYear 5 · Mathematics · DecimalsYear 5 Adding and Subtracting Decimals Worksheet — Level 1 — Practice Set 3 — Answers
Line up the decimal points before you add or subtract.
1.
54.9
+16.8
Answer: 71.7
- Line up the decimal points
- 54.9 + 16.8 = 71.7
2.
35.3
−11.9
Answer: 23.4
- Line up the decimal points
- 35.3 − 11.9 = 23.4
3.
28.9
−5.1
Answer: 23.8
- Line up the decimal points
- 28.9 − 5.1 = 23.8
4.
50.3
−37.9
Answer: 12.4
- Line up the decimal points
- 50.3 − 37.9 = 12.4
5.
9.8
+5.7
Answer: 15.5
- Line up the decimal points
- 9.8 + 5.7 = 15.5
6.
54.3
−5.8
Answer: 48.5
- Line up the decimal points
- 54.3 − 5.8 = 48.5
7.
57.4
+36.4
Answer: 93.8
- Line up the decimal points
- 57.4 + 36.4 = 93.8
8.
27.9
+17.3
Answer: 45.2
- Line up the decimal points
- 27.9 + 17.3 = 45.2
9.
59.6
−22.3
Answer: 37.3
- Line up the decimal points
- 59.6 − 22.3 = 37.3
10.
39.7
−27.4
Answer: 12.3
- Line up the decimal points
- 39.7 − 27.4 = 12.3
11.
29.0
−22.1
Answer: 6.9
- Line up the decimal points
- 29.0 − 22.1 = 6.9
12.
59.3
−38.8
Answer: 20.5
- Line up the decimal points
- 59.3 − 38.8 = 20.5
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.
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