Posted by m on Tuesday, November 9, 2010 at 11:03am.
write as an addition problem
(21)42
A) (21)(42)
B) (21)+42
c) (21)+(42)
D) none of the above
I thought it would be c. Is this correct?

math  Ms. Sue, Tuesday, November 9, 2010 at 11:05am
Right.
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