long mulipulcation

345
x 5
----

3 answers

I never learned how to do " mulipulcation"
http://www.scriblink.com/index.jsp?act=phome&ld=1&rid=5044&cid=6393
345 = 3*100 + 4*10 + 5

times 5

= 15*100 + 20*10 + 5*5

= 1500 + 200 + 25

= 1725
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