Year 7 Adding and Subtracting Decimals Worksheet — Level 2 — 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 2 — Practice Set 3 — Answers
Line up the decimal points before you add or subtract.
1.
55.59
+28.05
Answer: 83.64
- Line up the decimal points
- 55.59 + 28.05 = 83.64
2.
47.70
+13.66
Answer: 61.36
- Line up the decimal points
- 47.70 + 13.66 = 61.36
3.
27.45
+40.77
Answer: 68.22
- Line up the decimal points
- 27.45 + 40.77 = 68.22
4.
58.51
+22.14
Answer: 80.65
- Line up the decimal points
- 58.51 + 22.14 = 80.65
5.
18.73
−17.04
Answer: 1.69
- Line up the decimal points
- 18.73 − 17.04 = 1.69
6.
25.59
+1.63
Answer: 27.22
- Line up the decimal points
- 25.59 + 1.63 = 27.22
7.
55.95
+13.26
Answer: 69.21
- Line up the decimal points
- 55.95 + 13.26 = 69.21
8.
54.60
+28.37
Answer: 82.97
- Line up the decimal points
- 54.60 + 28.37 = 82.97
9.
27.99
+22.23
Answer: 50.22
- Line up the decimal points
- 27.99 + 22.23 = 50.22
10.
42.82
+31.27
Answer: 74.09
- Line up the decimal points
- 42.82 + 31.27 = 74.09
11.
13.40
−7.87
Answer: 5.53
- Line up the decimal points
- 13.40 − 7.87 = 5.53
12.
27.15
−7.76
Answer: 19.39
- Line up the decimal points
- 27.15 − 7.76 = 19.39
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.