Year 3 Addition Worksheet — Level 1 — Practice Set 2 — Answers
Answer sheet with worked solutions for the Year 3 addition worksheet.
Year 3 Addition Worksheet — Level 1 — Practice Set 2 — Answers
Set out each sum in columns. Show any regrouping.
1.
44
+40
Answer: 84
- 4 + 0 = 4
- 4 + 4 = 8
2.
52
+22
Answer: 74
- 2 + 2 = 4
- 5 + 2 = 7
3.
70
+28
Answer: 98
- 0 + 8 = 8
- 7 + 2 = 9
4.
67
+31
Answer: 98
- 7 + 1 = 8
- 6 + 3 = 9
5.
38
+61
Answer: 99
- 8 + 1 = 9
- 3 + 6 = 9
6.
85
+10
Answer: 95
- 5 + 0 = 5
- 8 + 1 = 9
7.
39
+42
Answer: 81
- 9 + 2 = 11 → write 1, carry 1
- 3 + 4 + 1 = 8
8.
58
+41
Answer: 99
- 8 + 1 = 9
- 5 + 4 = 9
9.
35
+52
Answer: 87
- 5 + 2 = 7
- 3 + 5 = 8
10.
30
+43
Answer: 73
- 0 + 3 = 3
- 3 + 4 = 7
11.
74
+25
Answer: 99
- 4 + 5 = 9
- 7 + 2 = 9
12.
15
+24
Answer: 39
- 5 + 4 = 9
- 1 + 2 = 3
13.
63
+12
Answer: 75
- 3 + 2 = 5
- 6 + 1 = 7
14.
58
+19
Answer: 77
- 8 + 9 = 17 → write 7, carry 1
- 5 + 1 + 1 = 7
15.
61
+38
Answer: 99
- 1 + 8 = 9
- 6 + 3 = 9
16.
77
+22
Answer: 99
- 7 + 2 = 9
- 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.