4th Grade Addition Worksheet — Getting Started — Practice Set 2 — Answers
Answer sheet with worked solutions for the 4th Grade addition worksheet.
Success TutoringWorksheetsAnswer sheet4th Grade · Mathematics · Addition4th Grade Addition Worksheet — Getting Started — Practice Set 2 — Answers
Set out each sum in columns. Show any regrouping.
1.
515
+390
Answer: 905
- 5 + 0 = 5
- 1 + 9 = 10 → write 0, carry 1
- 5 + 3 + 1 = 9
2.
670
+175
Answer: 845
- 0 + 5 = 5
- 7 + 7 = 14 → write 4, carry 1
- 6 + 1 + 1 = 8
3.
599
+400
Answer: 999
- 9 + 0 = 9
- 9 + 0 = 9
- 5 + 4 = 9
4.
496
+503
Answer: 999
- 6 + 3 = 9
- 9 + 0 = 9
- 4 + 5 = 9
5.
780
+203
Answer: 983
- 0 + 3 = 3
- 8 + 0 = 8
- 7 + 2 = 9
6.
761
+105
Answer: 866
- 1 + 5 = 6
- 6 + 0 = 6
- 7 + 1 = 8
7.
862
+137
Answer: 999
- 2 + 7 = 9
- 6 + 3 = 9
- 8 + 1 = 9
8.
822
+177
Answer: 999
- 2 + 7 = 9
- 2 + 7 = 9
- 8 + 1 = 9
9.
688
+148
Answer: 836
- 8 + 8 = 16 → write 6, carry 1
- 8 + 4 + 1 = 13 → write 3, carry 1
- 6 + 1 + 1 = 8
10.
138
+169
Answer: 307
- 8 + 9 = 17 → write 7, carry 1
- 3 + 6 + 1 = 10 → write 0, carry 1
- 1 + 1 + 1 = 3
11.
250
+227
Answer: 477
- 0 + 7 = 7
- 5 + 2 = 7
- 2 + 2 = 4
12.
513
+486
Answer: 999
- 3 + 6 = 9
- 1 + 8 = 9
- 5 + 4 = 9
13.
435
+394
Answer: 829
- 5 + 4 = 9
- 3 + 9 = 12 → write 2, carry 1
- 4 + 3 + 1 = 8
14.
838
+161
Answer: 999
- 8 + 1 = 9
- 3 + 6 = 9
- 8 + 1 = 9
15.
862
+123
Answer: 985
- 2 + 3 = 5
- 6 + 2 = 8
- 8 + 1 = 9
16.
631
+366
Answer: 997
- 1 + 6 = 7
- 3 + 6 = 9
- 6 + 3 = 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.
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