Math KCF

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1.
1 point
1-0=
2.
1 point
10-10=
3.
1 point
6-3=
4.
1 point
8-3=
5.
1 point
5-3=
6.
1 point
6-6=
7.
1 point
4-2=
8.
1 point
9-4=
9.
1 point
7-4=
10.
1 point
3-1=