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pencilSubtraction 1-Digit

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