Mental math division
Mental math multiplication
100

6 1/2 \ 1/4

what is 26
100
1/2 * 6
what is 3
200
6 \ 4/8
what is 3
200
3/8 * 3
what is 1 1/8
300
10 1/2 \ 5 1/4
what is 2
300
2/5 * 7
what is 2 1/5
400
5 \ 1 1/4
what is 4
400
7 * 1/2
what is 3 1/2
500
100 \ 1/2
what is 200
500
100 * 1/2 
what is 50
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