Adding
Subtracting
100
2+2?
What is 4.
100
1-1?
What is 0.
200
3+4?
What is 7.
200
3-1?
What is 2.
300
3+5?
What is 8.
300
4-2?
What is 2.
400
1+8?
What is 9.
400
5-3?
What is 2.
500
9+3?
What is 12.
500
10-8?
What is 2.
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