Regrouping Study Guide

Three and Four Digits

100

13+23+11=

47

200

14+13+26=

53

300

36+29+18+21=

104

+

100

61+15=

76

200

39+18=

57

300

67+16=

83

-

100

88-44=

44

200

70-25=

45

300

51-28=

23

Challenge

100

Find the missing digit:

  42 

- _7

_______

25

1

200

22+36+13+11=

(Miss Sims can put up a picture)

82

300

Find the missing digit:

   36

   24

   13

+ _ _ 

______________

84

11