Show:
Addition With Regrouping
Subtraction With Regrouping
2-Digit Addition Without Regrouping
2-Digit Subtraction Without Regrouping
Surprise!
100
93 + 27=
120
100
97-18=
79
100

63+14=  

77

100

58-22=

36

100

How do you read this symbol + ?

plus

200
54 + 76=
130
200
83-47=
36
200

51+36=

87

200

78-26=

52

200

What is the answer in addition called?

SUM

300
28+96=
124
300
92-63=
29
300

42+37=

79

300

65-43=

22

300
Estimate-Round to the nearest hundred 456+328=
800
400
47+56=
103
400
73-56=
17
400

67+22=

89

400

38-25=

13

400
Estimate-Round to the nearest hundred 765-248=
600
500
39+68=
107
500
64-38=
26
500

74+24=

98

500

79-18=

61

500
Estimate-Round to the nearest hundred 500-245=
300