3rd Grade Addition Worksheet — Level 1 — Answers
Answer sheet with worked solutions for the 3rd Grade addition worksheet.
Success TutoringWorksheetsAnswer sheet3rd Grade · Mathematics · Addition3rd Grade Addition Worksheet — Level 1 — Answers
Set out each sum in columns. Show any regrouping.
1.
280
+719
Answer: 999
- 0 + 9 = 9
- 8 + 1 = 9
- 2 + 7 = 9
2.
178
+743
Answer: 921
- 8 + 3 = 11 → write 1, carry 1
- 7 + 4 + 1 = 12 → write 2, carry 1
- 1 + 7 + 1 = 9
3.
315
+326
Answer: 641
- 5 + 6 = 11 → write 1, carry 1
- 1 + 2 + 1 = 4
- 3 + 3 = 6
4.
451
+204
Answer: 655
- 1 + 4 = 5
- 5 + 0 = 5
- 4 + 2 = 6
5.
605
+168
Answer: 773
- 5 + 8 = 13 → write 3, carry 1
- 0 + 6 + 1 = 7
- 6 + 1 = 7
6.
284
+616
Answer: 900
- 4 + 6 = 10 → write 0, carry 1
- 8 + 1 + 1 = 10 → write 0, carry 1
- 2 + 6 + 1 = 9
7.
823
+176
Answer: 999
- 3 + 6 = 9
- 2 + 7 = 9
- 8 + 1 = 9
8.
342
+657
Answer: 999
- 2 + 7 = 9
- 4 + 5 = 9
- 3 + 6 = 9
9.
233
+678
Answer: 911
- 3 + 8 = 11 → write 1, carry 1
- 3 + 7 + 1 = 11 → write 1, carry 1
- 2 + 6 + 1 = 9
10.
438
+444
Answer: 882
- 8 + 4 = 12 → write 2, carry 1
- 3 + 4 + 1 = 8
- 4 + 4 = 8
11.
143
+856
Answer: 999
- 3 + 6 = 9
- 4 + 5 = 9
- 1 + 8 = 9
12.
493
+146
Answer: 639
- 3 + 6 = 9
- 9 + 4 = 13 → write 3, carry 1
- 4 + 1 + 1 = 6
13.
231
+185
Answer: 416
- 1 + 5 = 6
- 3 + 8 = 11 → write 1, carry 1
- 2 + 1 + 1 = 4
14.
725
+114
Answer: 839
- 5 + 4 = 9
- 2 + 1 = 3
- 7 + 1 = 8
15.
484
+138
Answer: 622
- 4 + 8 = 12 → write 2, carry 1
- 8 + 3 + 1 = 12 → write 2, carry 1
- 4 + 1 + 1 = 6
16.
594
+405
Answer: 999
- 4 + 5 = 9
- 9 + 0 = 9
- 5 + 4 = 9
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