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 ...

Build, read, write, and represent three-digit numbers using base-10 blocks and symbols.

To multiply two numbers by hand take a few steps but it’s something we’re taught in school. When dealing with big numbers, really big numbers, we need to a quicker way to do things.

In this KS2 Maths article you’ll learn techniques to help you multiply 3 single-digit numbers together. We also have a KS2 Maths quiz and lots of examples.

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

For example, to multiply four-digit numbers, instead of needing 4 ² = 16 multiplications, Karatsuba's method gets away with only nine.