Year 4 Addition Worksheet — Level 1 — Answers
Answer sheet with worked solutions for the Year 4 addition worksheet.
Success TutoringWorksheetsAnswer sheetYear 4 · Mathematics · AdditionYear 4 Addition Worksheet — Level 1 — Answers
Set out each sum in columns. Show any regrouping.
1.
277
+390
Answer: 667
- 7 + 0 = 7
- 7 + 9 = 16 → write 6, carry 1
- 2 + 3 + 1 = 6
2.
799
+155
Answer: 954
- 9 + 5 = 14 → write 4, carry 1
- 9 + 5 + 1 = 15 → write 5, carry 1
- 7 + 1 + 1 = 9
3.
861
+138
Answer: 999
- 1 + 8 = 9
- 6 + 3 = 9
- 8 + 1 = 9
4.
668
+300
Answer: 968
- 8 + 0 = 8
- 6 + 0 = 6
- 6 + 3 = 9
5.
656
+147
Answer: 803
- 6 + 7 = 13 → write 3, carry 1
- 5 + 4 + 1 = 10 → write 0, carry 1
- 6 + 1 + 1 = 8
6.
333
+589
Answer: 922
- 3 + 9 = 12 → write 2, carry 1
- 3 + 8 + 1 = 12 → write 2, carry 1
- 3 + 5 + 1 = 9
7.
163
+350
Answer: 513
- 3 + 0 = 3
- 6 + 5 = 11 → write 1, carry 1
- 1 + 3 + 1 = 5
8.
133
+656
Answer: 789
- 3 + 6 = 9
- 3 + 5 = 8
- 1 + 6 = 7
9.
678
+321
Answer: 999
- 8 + 1 = 9
- 7 + 2 = 9
- 6 + 3 = 9
10.
718
+255
Answer: 973
- 8 + 5 = 13 → write 3, carry 1
- 1 + 5 + 1 = 7
- 7 + 2 = 9
11.
741
+250
Answer: 991
- 1 + 0 = 1
- 4 + 5 = 9
- 7 + 2 = 9
12.
668
+261
Answer: 929
- 8 + 1 = 9
- 6 + 6 = 12 → write 2, carry 1
- 6 + 2 + 1 = 9
13.
424
+223
Answer: 647
- 4 + 3 = 7
- 2 + 2 = 4
- 4 + 2 = 6
14.
100
+899
Answer: 999
- 0 + 9 = 9
- 0 + 9 = 9
- 1 + 8 = 9
15.
265
+734
Answer: 999
- 5 + 4 = 9
- 6 + 3 = 9
- 2 + 7 = 9
16.
552
+403
Answer: 955
- 2 + 3 = 5
- 5 + 0 = 5
- 5 + 4 = 9
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