Common Core: 3.NBT
Answer Key
Grade 3additionChallenging

3-Digit Addition with Regrouping (Set B)

More 3-digit regrouping practice

8 problems

1.
411
+569
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2.
365
+100
___
3.
483
+274
___
4.
519
+126
___
5.
554
+ 878
____
6.
590
+ 731
____
7.
626
+ 583
____
8.
161
+100
___