Year 4 Addition Worksheet — Getting Started — Practice Set 2 — Answers
Answer sheet with worked solutions for the Year 4 addition worksheet.
Success TutoringWorksheetsAnswer sheetYear 4 · Mathematics · AdditionYear 4 Addition Worksheet — Getting Started — Practice Set 2 — Answers
Set out each sum in columns. Show any regrouping.
1.
40
+59
Answer: 99
- 0 + 9 = 9
- 4 + 5 = 9
2.
16
+80
Answer: 96
- 6 + 0 = 6
- 1 + 8 = 9
3.
21
+43
Answer: 64
- 1 + 3 = 4
- 2 + 4 = 6
4.
79
+14
Answer: 93
- 9 + 4 = 13 → write 3, carry 1
- 7 + 1 + 1 = 9
5.
23
+39
Answer: 62
- 3 + 9 = 12 → write 2, carry 1
- 2 + 3 + 1 = 6
6.
86
+13
Answer: 99
- 6 + 3 = 9
- 8 + 1 = 9
7.
41
+41
Answer: 82
- 1 + 1 = 2
- 4 + 4 = 8
8.
74
+16
Answer: 90
- 4 + 6 = 10 → write 0, carry 1
- 7 + 1 + 1 = 9
9.
12
+87
Answer: 99
- 2 + 7 = 9
- 1 + 8 = 9
10.
41
+37
Answer: 78
- 1 + 7 = 8
- 4 + 3 = 7
11.
40
+50
Answer: 90
- 0 + 0 = 0
- 4 + 5 = 9
12.
66
+13
Answer: 79
- 6 + 3 = 9
- 6 + 1 = 7
13.
88
+11
Answer: 99
- 8 + 1 = 9
- 8 + 1 = 9
14.
67
+15
Answer: 82
- 7 + 5 = 12 → write 2, carry 1
- 6 + 1 + 1 = 8
15.
50
+12
Answer: 62
- 0 + 2 = 2
- 5 + 1 = 6
16.
13
+20
Answer: 33
- 3 + 0 = 3
- 1 + 2 = 3
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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