Multiplying Whole Numbers Using an Area Model

Here is a visual way to solve multiplication problems involving multi-digit numbers.

Multiplying a Whole Number by a Decimal

This video shows how to multiply a whole number by a decimal in two ways - using base-10 blocks and with decimal squares.

This video demonstrates how to multiply a whole number by a decimal using base-10 blocks. It also shows how to check your answer using the standard algorithm.

Multiplying a Decimal by a Decimal

This video shows how to multiply a decimal by a decimal using a decimal model.

This video shows how to multiply a decimal by a decimal using the standard algorithm.