4th Grade Adding and Subtracting Decimals Worksheet — Level 1 — Practice Set 4 — Answers
Answer sheet with worked solutions for the 4th Grade decimals worksheet.
4th Grade Adding and Subtracting Decimals Worksheet — Level 1 — Practice Set 4 — Answers
Line up the decimal points before you add or subtract.
1.
25.3
−12.2
Answer: 13.1
- Line up the decimal points
- 25.3 − 12.2 = 13.1
2.
56.0
−20.0
Answer: 36.0
- Line up the decimal points
- 56.0 − 20.0 = 36.0
3.
30.0
−1.5
Answer: 28.5
- Line up the decimal points
- 30.0 − 1.5 = 28.5
4.
32.3
−13.0
Answer: 19.3
- Line up the decimal points
- 32.3 − 13.0 = 19.3
5.
30.8
−7.8
Answer: 23.0
- Line up the decimal points
- 30.8 − 7.8 = 23.0
6.
35.8
−29.5
Answer: 6.3
- Line up the decimal points
- 35.8 − 29.5 = 6.3
7.
4.1
+6.3
Answer: 10.4
- Line up the decimal points
- 4.1 + 6.3 = 10.4
8.
38.3
−31.7
Answer: 6.6
- Line up the decimal points
- 38.3 − 31.7 = 6.6
9.
28.7
−9.1
Answer: 19.6
- Line up the decimal points
- 28.7 − 9.1 = 19.6
10.
37.7
−3.5
Answer: 34.2
- Line up the decimal points
- 37.7 − 3.5 = 34.2
11.
5.5
+4.2
Answer: 9.7
- Line up the decimal points
- 5.5 + 4.2 = 9.7
12.
56.9
+29.8
Answer: 86.7
- Line up the decimal points
- 56.9 + 29.8 = 86.7
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.