Year 3 Addition Worksheet — Getting Started — Practice Set 2 — Answers
Answer sheet with worked solutions for the Year 3 addition worksheet.
Success TutoringWorksheetsAnswer sheetYear 3 · Mathematics · AdditionYear 3 Addition Worksheet — Getting Started — Practice Set 2 — Answers
Set out each sum in columns. Show any regrouping.
1.
71
+15
Answer: 86
- 1 + 5 = 6
- 7 + 1 = 8
2.
29
+48
Answer: 77
- 9 + 8 = 17 → write 7, carry 1
- 2 + 4 + 1 = 7
3.
40
+50
Answer: 90
- 0 + 0 = 0
- 4 + 5 = 9
4.
75
+10
Answer: 85
- 5 + 0 = 5
- 7 + 1 = 8
5.
29
+57
Answer: 86
- 9 + 7 = 16 → write 6, carry 1
- 2 + 5 + 1 = 8
6.
39
+33
Answer: 72
- 9 + 3 = 12 → write 2, carry 1
- 3 + 3 + 1 = 7
7.
89
+10
Answer: 99
- 9 + 0 = 9
- 8 + 1 = 9
8.
23
+40
Answer: 63
- 3 + 0 = 3
- 2 + 4 = 6
9.
40
+42
Answer: 82
- 0 + 2 = 2
- 4 + 4 = 8
10.
70
+12
Answer: 82
- 0 + 2 = 2
- 7 + 1 = 8
11.
49
+42
Answer: 91
- 9 + 2 = 11 → write 1, carry 1
- 4 + 4 + 1 = 9
12.
63
+35
Answer: 98
- 3 + 5 = 8
- 6 + 3 = 9
13.
31
+52
Answer: 83
- 1 + 2 = 3
- 3 + 5 = 8
14.
44
+15
Answer: 59
- 4 + 5 = 9
- 4 + 1 = 5
15.
12
+67
Answer: 79
- 2 + 7 = 9
- 1 + 6 = 7
16.
46
+53
Answer: 99
- 6 + 3 = 9
- 4 + 5 = 9
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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