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pencilSubtraction 1-Digit

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