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Math
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3rd Grade
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Three-Digit Addition
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Sheet 7
Three-Digit Addition — Worksheet 7
Name:
Date:
Three-Digit Addition
Solve each problem. Show your work!
1.
109
149
+
2.
881
659
+
3.
517
424
+
4.
472
291
+
5.
542
683
+
6.
306
224
+
7.
711
514
+
8.
257
394
+
9.
334
527
+
10.
337
882
+
11.
298
802
+
12.
252
214
+
13.
223
332
+
14.
538
709
+
15.
159
830
+
16.
542
597
+
17.
644
872
+
18.
599
836
+
19.
762
131
+
20.
239
385
+
258
1540
941
763
1225
530
1225
651
861
1219
1100
466
555
1247
989
1139
1516
1435
893
624
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children.com
3rd Grade · Sheet #7