multiplying by 11

The Secret of Multiplying by 11

The Math Trick: For Kids Multiplying by 11 is probably one of the most famous mental math shortcuts.  If you have not heard of it, this math trick requires you to memorize three simple steps. To get the product of any 2-digit number multiplied by 11, for example 25 × 11, here are the steps. Step 1: Copy the ones […]