Learn how to multiply 2-digit numbers mentally with this step-by-step guide for kids. Discover simple techniques to boost calculation speed, improve mental math skills, and build confidence for ...

In this KS2 Maths article you’ll learn how to use short multiplication to multiply a 3-digit number by a 1-digit number. We also have a KS2 Maths quiz and lots of examples.

Schönhage and Strassen predicted that an algorithm multiplying n -digit numbers using n * log (n) basic operations should exist, Harvey says. His paper is the first known proof that it does.

Activity: Multiplying 2-digits by 1-digit Complete this interactive activity to better understand how to multiply a 2-digit number by a 1-digit number. Then put your knowledge to the test.