Year 3 Addition Worksheet — Level 3 — Answers
Answer sheet with worked solutions for the Year 3 addition worksheet.
Success TutoringWorksheetsAnswer sheetYear 3 · Mathematics · AdditionYear 3 Addition Worksheet — Level 3 — Answers
Set out each sum in columns. Show any regrouping.
1.
1737
+1451
Answer: 3188
- 7 + 1 = 8
- 3 + 5 = 8
- 7 + 4 = 11 → write 1, carry 1
- 1 + 1 + 1 = 3
2.
4267
+5732
Answer: 9999
- 7 + 2 = 9
- 6 + 3 = 9
- 2 + 7 = 9
- 4 + 5 = 9
3.
7273
+2726
Answer: 9999
- 3 + 6 = 9
- 7 + 2 = 9
- 2 + 7 = 9
- 7 + 2 = 9
4.
3942
+4076
Answer: 8018
- 2 + 6 = 8
- 4 + 7 = 11 → write 1, carry 1
- 9 + 0 + 1 = 10 → write 0, carry 1
- 3 + 4 + 1 = 8
5.
8916
+1083
Answer: 9999
- 6 + 3 = 9
- 1 + 8 = 9
- 9 + 0 = 9
- 8 + 1 = 9
6.
4906
+2545
Answer: 7451
- 6 + 5 = 11 → write 1, carry 1
- 0 + 4 + 1 = 5
- 9 + 5 = 14 → write 4, carry 1
- 4 + 2 + 1 = 7
7.
1899
+3449
Answer: 5348
- 9 + 9 = 18 → write 8, carry 1
- 9 + 4 + 1 = 14 → write 4, carry 1
- 8 + 4 + 1 = 13 → write 3, carry 1
- 1 + 3 + 1 = 5
8.
2503
+7496
Answer: 9999
- 3 + 6 = 9
- 0 + 9 = 9
- 5 + 4 = 9
- 2 + 7 = 9
9.
1117
+5685
Answer: 6802
- 7 + 5 = 12 → write 2, carry 1
- 1 + 8 + 1 = 10 → write 0, carry 1
- 1 + 6 + 1 = 8
- 1 + 5 = 6
10.
5636
+4030
Answer: 9666
- 6 + 0 = 6
- 3 + 3 = 6
- 6 + 0 = 6
- 5 + 4 = 9
11.
8153
+1846
Answer: 9999
- 3 + 6 = 9
- 5 + 4 = 9
- 1 + 8 = 9
- 8 + 1 = 9
12.
2399
+6029
Answer: 8428
- 9 + 9 = 18 → write 8, carry 1
- 9 + 2 + 1 = 12 → write 2, carry 1
- 3 + 0 + 1 = 4
- 2 + 6 = 8
13.
6507
+1541
Answer: 8048
- 7 + 1 = 8
- 0 + 4 = 4
- 5 + 5 = 10 → write 0, carry 1
- 6 + 1 + 1 = 8
14.
5556
+4443
Answer: 9999
- 6 + 3 = 9
- 5 + 4 = 9
- 5 + 4 = 9
- 5 + 4 = 9
15.
6871
+3128
Answer: 9999
- 1 + 8 = 9
- 7 + 2 = 9
- 8 + 1 = 9
- 6 + 3 = 9
16.
6199
+2455
Answer: 8654
- 9 + 5 = 14 → write 4, carry 1
- 9 + 5 + 1 = 15 → write 5, carry 1
- 1 + 4 + 1 = 6
- 6 + 2 = 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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