math
posted by jeff .
Can someone check my answers:
write out each problem with repeated addition.
3*0=
0*13=
20*0=
I got
0+0+0
0+0+0+0+0+0+0+0+0+0+0+0+0
0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+0

0 times 13 is just a zero I think.
13 times 0 is your 0 + 0 + 0 etc
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