Solve Mentally
100 + 75 =
175
56 + 55 =
111
4 tens + 5 ones = 50 - ______
5
105 - 46 =
59
28 + 18 + 41 + 12 =
34 + 10 =
44
38 + 48 + 51 + 12 =
149
6 tens + 1 one = 1 + ______
60
57 + 67 =
124
57 - 48 =
9
_____ + 10 = 156
146
87 - 45 =
42
32 + 40 = _____ + 20
52
103 - 76 =
27
57 + 48 =
105
_____ = 172 - 100
72
106 + 88 =
194
100 - _______ = 45 + 15 + 20
20
55 + 57 =
112
107 - 28 =
79
____ = 64 - 30
34
104 - 66 =
38
100 + 25 = ______ + 25
100
108 + 26 =
134
____ + 30 = 80
50