1st Grade Addition Worksheet — Level 2 — Practice Set 2 — Answers
Answer sheet with worked solutions for the 1st Grade addition worksheet.
1st Grade Addition Worksheet — Level 2 — Practice Set 2 — Answers
Set out each sum in columns. Show any regrouping.
1.
43
+10
Answer: 53
- 3 + 0 = 3
- 4 + 1 = 5
2.
46
+51
Answer: 97
- 6 + 1 = 7
- 4 + 5 = 9
3.
48
+30
Answer: 78
- 8 + 0 = 8
- 4 + 3 = 7
4.
26
+36
Answer: 62
- 6 + 6 = 12 → write 2, carry 1
- 2 + 3 + 1 = 6
5.
58
+15
Answer: 73
- 8 + 5 = 13 → write 3, carry 1
- 5 + 1 + 1 = 7
6.
15
+70
Answer: 85
- 5 + 0 = 5
- 1 + 7 = 8
7.
52
+39
Answer: 91
- 2 + 9 = 11 → write 1, carry 1
- 5 + 3 + 1 = 9
8.
50
+44
Answer: 94
- 0 + 4 = 4
- 5 + 4 = 9
9.
86
+13
Answer: 99
- 6 + 3 = 9
- 8 + 1 = 9
10.
66
+33
Answer: 99
- 6 + 3 = 9
- 6 + 3 = 9
11.
48
+51
Answer: 99
- 8 + 1 = 9
- 4 + 5 = 9
12.
38
+61
Answer: 99
- 8 + 1 = 9
- 3 + 6 = 9
13.
76
+22
Answer: 98
- 6 + 2 = 8
- 7 + 2 = 9
14.
16
+25
Answer: 41
- 6 + 5 = 11 → write 1, carry 1
- 1 + 2 + 1 = 4
15.
17
+21
Answer: 38
- 7 + 1 = 8
- 1 + 2 = 3
16.
75
+20
Answer: 95
- 5 + 0 = 5
- 7 + 2 = 9
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.