Year 1 Addition Worksheet — Level 2 — Answers
Answer sheet with worked solutions for the Year 1 addition worksheet.
Year 1 · Mathematics · Addition
Year 1 Addition Worksheet — Level 2 — Answers
Success Tutoring
Set out each sum in columns. Show any regrouping.
1.
44
+21
Answer: 65
- 4 + 1 = 5
- 4 + 2 = 6
2.
23
+57
Answer: 80
- 3 + 7 = 10 → write 0, carry 1
- 2 + 5 + 1 = 8
3.
22
+47
Answer: 69
- 2 + 7 = 9
- 2 + 4 = 6
4.
69
+30
Answer: 99
- 9 + 0 = 9
- 6 + 3 = 9
5.
78
+15
Answer: 93
- 8 + 5 = 13 → write 3, carry 1
- 7 + 1 + 1 = 9
6.
89
+10
Answer: 99
- 9 + 0 = 9
- 8 + 1 = 9
7.
23
+76
Answer: 99
- 3 + 6 = 9
- 2 + 7 = 9
8.
32
+30
Answer: 62
- 2 + 0 = 2
- 3 + 3 = 6
9.
45
+22
Answer: 67
- 5 + 2 = 7
- 4 + 2 = 6
10.
66
+33
Answer: 99
- 6 + 3 = 9
- 6 + 3 = 9
11.
14
+85
Answer: 99
- 4 + 5 = 9
- 1 + 8 = 9
12.
20
+79
Answer: 99
- 0 + 9 = 9
- 2 + 7 = 9
13.
42
+57
Answer: 99
- 2 + 7 = 9
- 4 + 5 = 9
14.
38
+42
Answer: 80
- 8 + 2 = 10 → write 0, carry 1
- 3 + 4 + 1 = 8
15.
72
+17
Answer: 89
- 2 + 7 = 9
- 7 + 1 = 8
16.
53
+19
Answer: 72
- 3 + 9 = 12 → write 2, carry 1
- 5 + 1 + 1 = 7
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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