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pencil Addition 1-Digit

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