Common Core: 3.NBT
Answer Key
Grade 3additionChallenging

3-Digit Addition with Regrouping (Set E)

Master 3-digit regrouping

8 problems

1.
519
+126
___
2.
554
+ 878
____
3.
590
+ 731
____
4.
626
+ 583
____
5.
161
+100
___
6.
698
+287
___
7.
693
+100
___
8.
770
+ 892
____