It's not magic; it's mental math—a superpower you can learn! This article is your step-by-step guide to mastering mental multiplication of two-digit numbers.

To help you understand the algorithm, the video shows a simple two-digit by two-digit multiplication. You can see that the first and last digits are essentially the result of one multiplication.

This Maths article explains both the mental method and written method for multiplying a 2-digit number by a 1-digit number.