Multi-digit multiplication

6 videos
3 skills
You know your multiplication tables (and basic division) from the 3rd grade and are ready to learn how to multiply and divide multi-digit numbers. Imagine the possibilities! This tutorial will make you unstoppable.

Multiplying: 2 digits times 1 digit

VIDEO 1:51 minutes
Let's start by solving a basic multiplication problem. No carrying of numbers in this example!

Multiplying: 3 digits times 1 digit

VIDEO 1:54 minutes
How about this example? We're going to multiply a 3 digit number by a 1 digit number. Again, no carrying involved.

Multiplication without regrouping

Multiply 2- or 3-digit numbers by 1-digit numbers. No regrouping.

Multiplying: 2 digits times 1 digit (with carrying)

VIDEO 2:09 minutes
We use something called the standard method which involves writing the larger of the two numbers on top. Watch.

Multiplying: 3 digits times 1 digit (with carrying)

VIDEO 2:15 minutes
We're carrying numbers in this example. Everyone needs a hand now and then, right?

Multiplying: 4 digits times 1 digit (with carrying)

VIDEO 3:24 minutes
This is getting fun! We're now multiplying FOUR digits times one digit. Remember to carry!

Multiplication with carrying

Multiply 3- or 4-digit numbers by 1-digit numbers. Regrouping needed.

Multiplying: 2 digit numbers

VIDEO 4:07 minutes
The trick here to remember your place value as you multiply and then add the numbers. We'll demonstrate and make it perfectly clear!

Multiplying 2-digit numbers

Multiply 2-digit numbers by 2-digit numbers. Regrouping needed.