Eighteen problems to a sheet - more than the addition pages carry, because multiplying fractions is the shorter procedure: multiply the numerators, multiply the denominators, reduce. No common denominator is needed, which is why the Denominators setting does not appear on this page.
The reducing is where the work actually is. Answers are given in lowest terms, so a student who multiplies 2/4 by 2/3 and writes 4/12 has the arithmetic right and the answer unfinished - which the key will show.
Multiply the two numerators for the new numerator and the two denominators for the new denominator, then reduce. Unlike addition, the denominators do not need to match.
In lowest terms, and as a mixed number rather than an improper fraction - so 6/4 is given as 1 1/2 and 8/4 as 2. Turn on Include Answer Pages to print the key behind the sheet.
Multiplying never needs a common denominator, so the like/unlike choice would make no difference to the problems. It appears on the addition and subtraction pages instead.
Yes - tick Division in the operations above and untick multiplication. Dividing follows the same layout.