The product rule and the power rules in question are
#a^mxxa^n = a^(m+n)#
#a^m-:a^n = a^(m-n)#
#(a^m)^n = a^(mxxn)#
(Note that the second rule comes directly from the first, because
Rather than simply post answers to all of the questions on the worksheet, here are a couple of examples of each. These should show how to do the rest, as the problems are all effectively the same, save for the changed values.