addition double digit non carrying
What is 20 + 50?
70
55 + 55?
110
What is 43 - 23?
20
What is 55-49 ?
6
What is 115 + 110?
225
What is 35 + 50 ?
85
What is 75 + 75?
150
What is 49 - 28?
21
What is 97 - 69?
28
What is 155 + 145?
300
What is 50 + 80?
130
What is 66 + 74?
140
What is 79 - 33?
46
What is 43-19?
24
What is 250 + 450?
700
What is 65 + 70?
135
What is 22 + 78 ?
100
What is 87 - 53?
34
What is 82 - 33?
49
What is 555 + 550?
1,105
What is 95 + 80?
175
What is 83 + 97?
180
What is 99 - 76?
23
What is 91 - 17?
74
What is 645 + 655 ?
1,300