This tool shows students how to multiply all two-digit numbers that end with the number 5! Why is this fascinating and fun? Because, they learn to do it in their heads without the use of any calculator! Imagine your students actually learning that their calculators aren't as cool as their own brains! This is not a trick. It's a set of super simple formulas that are easy to remember and use! What's 65 x 65? When they can work out the answer instantly in their heads, they will begin to feel like the little geniuses that they are! Enjoy!