What is the correct first step when multiplying mixed numbers?
A. Rewrite the mixed numbers as improper fractions.
B. Eliminate common factors between the whole numbers.
C. Find a common denominator.
D. Cross multiply numerators and denominators
6 answers
1 1/3 * 3 = 4/3 * 3
I think it's D, am I wrong?
Before you can do D, you need at least A
Even after doing A, you would not "cross-multiply" numerators and denominators
when multiplying two fractions.
e.g. (4/7)(3/8) = 12/56
= 3/14 , I multiplied the numerators and the denominators, then reduced to lowest terms
Once you become more comfortable with it, you can "cancel" common factors
in the numerators and the denominators.
when multiplying two fractions.
e.g. (4/7)(3/8) = 12/56
= 3/14 , I multiplied the numerators and the denominators, then reduced to lowest terms
Once you become more comfortable with it, you can "cancel" common factors
in the numerators and the denominators.
I see now, thanks Reiny and oobleck!
but what are all the answers
4 answers