100
57 + 28=___
What is 85
100
89 - 17=___
What is 72
200
88 + 79=___
What is 167
200
167 - 98=___
What is 69
300
123 + 79=___
What is 202
300
254 - 136=___
What is 118
400
145 + 167=___
What is 312
400
1,567 - 687=___
What is 880
500
254 + 359=___
What is 613
500
3,958 - 1,689=___
What is 2,269