Show:
Subtraction regrouping
Addition regrouping
Multiplication facts
Do we need to regroup?
100

80 - 24

56

100

37 + 39

76

100

2 x 6

12

100

24 + 57

Yes! 

200

98 - 79

19

200

28 + 63

91

200

5 x 6

30

200

88 + 11

No!

300

433 - 347

86

300

123 + 657

780

300

7 x 3

21

300

86 - 49

Yes!

400

825 - 296

529

400

192 + 521

713

400

7 x 8

56

400

776 - 947

Yes!

500

932 - 774

158

500

819 + 757

1,576

500

9 x 8

72

500

821 + 163

No!