Mental Math
72+10
82
87+56
143
22-18
4
127+18
145
153-31
122
83+100
183
35+25
60
20-12
8
136+16
152
200-37
163
65+40
105
27+46
73
34-25
9
109+41
150
182-59
123
85+42
127
53+19
72
25-18
7
29+148
177
154-37
117
127+___=167
40
44+27
71
53-29
23
158+67
225
172-48
124