Year 3 Addition Worksheet — Level 2 — Answers
Answer sheet with worked solutions for the Year 3 addition worksheet.
Year 3 · Mathematics · Addition
Year 3 Addition Worksheet — Level 2 — Answers
Success Tutoring
Set out each sum in columns. Show any regrouping.
1.
897
+102
Answer: 999
- 7 + 2 = 9
- 9 + 0 = 9
- 8 + 1 = 9
2.
481
+487
Answer: 968
- 1 + 7 = 8
- 8 + 8 = 16 → write 6, carry 1
- 4 + 4 + 1 = 9
3.
259
+623
Answer: 882
- 9 + 3 = 12 → write 2, carry 1
- 5 + 2 + 1 = 8
- 2 + 6 = 8
4.
106
+833
Answer: 939
- 6 + 3 = 9
- 0 + 3 = 3
- 1 + 8 = 9
5.
137
+763
Answer: 900
- 7 + 3 = 10 → write 0, carry 1
- 3 + 6 + 1 = 10 → write 0, carry 1
- 1 + 7 + 1 = 9
6.
880
+119
Answer: 999
- 0 + 9 = 9
- 8 + 1 = 9
- 8 + 1 = 9
7.
253
+193
Answer: 446
- 3 + 3 = 6
- 5 + 9 = 14 → write 4, carry 1
- 2 + 1 + 1 = 4
8.
363
+452
Answer: 815
- 3 + 2 = 5
- 6 + 5 = 11 → write 1, carry 1
- 3 + 4 + 1 = 8
9.
866
+133
Answer: 999
- 6 + 3 = 9
- 6 + 3 = 9
- 8 + 1 = 9
10.
660
+200
Answer: 860
- 0 + 0 = 0
- 6 + 0 = 6
- 6 + 2 = 8
11.
138
+408
Answer: 546
- 8 + 8 = 16 → write 6, carry 1
- 3 + 0 + 1 = 4
- 1 + 4 = 5
12.
290
+635
Answer: 925
- 0 + 5 = 5
- 9 + 3 = 12 → write 2, carry 1
- 2 + 6 + 1 = 9
13.
582
+337
Answer: 919
- 2 + 7 = 9
- 8 + 3 = 11 → write 1, carry 1
- 5 + 3 + 1 = 9
14.
539
+336
Answer: 875
- 9 + 6 = 15 → write 5, carry 1
- 3 + 3 + 1 = 7
- 5 + 3 = 8
15.
597
+142
Answer: 739
- 7 + 2 = 9
- 9 + 4 = 13 → write 3, carry 1
- 5 + 1 + 1 = 7
16.
668
+154
Answer: 822
- 8 + 4 = 12 → write 2, carry 1
- 6 + 5 + 1 = 12 → write 2, carry 1
- 6 + 1 + 1 = 8
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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