How to tell if 8 divides into a number. There is a simple test for this. This post explains this.
Archive | Divisibility Tricks
There’s a nifty trick for finding out if 3 divides evenly into a number. This little proof shows why the trick works.
Practice problems for reducing fractions. Use divisibility tricks to reduce fractions.
There’s a weird and interesting trick for divisibility by 7. This blog tells you how to do it. Sit back and be amazed.
It is not hard to find out if 4 goes into a number evenly. Here is a trick that shows you how to find out very quickly.