In mathematical problems, the word 'of' can be used instead of 'x'. 

The reciprocal is where you flip the number! 

Sometimes you will have to change a PROPER fraction to an IMPROPER fraction (and vice versa). Ask yourself;

How many times does the denominator (bottom number) fit into the numerator (top number)? This will be your whole number. 

What ever is left will create the fraction component over the SAME ORIGINAL denominator.