While the box method is essentially the same as the standard algorithm, it does a much nicer job of illustrating what's going on in a multiple-digit multiplication problem. 23 times 7 really just ...

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.

You will need to calculate using a column method, which is another name for long multiplication. This will allow you to multiply up to 4-digit numbers by 2-digit numbers.

You then do some operations on all the two-digit numbers and reconstitute the results into a final product. For multiplication involving large numbers, the Karatsuba method takes far fewer steps than ...

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 ...

Watch Savanna Burris of Meadow Homes Elementary in Concord, California breaks down the "box method" of multiplication — in less than two minutes.