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.
Sing songs with hand movements. There are multiplication albums that sing the times tables. You can listen along and learn the times tables through music instead of rote memorization. Listen to a few different versions and find one that works best for you. Add in hand motions or dance moves that illustrate the different number pairs to make the process more interactive.