Addition
Subtraction
100
2+1
3
100
3-1
2
200
2+3
5
200
6-2
4
300
There are 2 cookies. Then we get 5 more. How many cookies are there?
7 cookies
300
There were 8 goldfishes. Emi ate 3 goldfishes. How many goldfishes are left?
5 goldfishes
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