If the answer keys do not provide sufficient help to illustrate the concepts needed for dividing fractions, please make use of the fraction calculator. It will break down the steps in more detail and help you master fraction division in no time!
As well as a printed blank hundred square, another way to visualise decimals is to make a decimal stick. Get a cane or long stick, place with tape a number 1 to the right hand end, then a 0 to the left. Ask them now to place 0.5 in the middle, then together work out where all the other decimal points should go.