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### Course: Class 4>Unit 2

Lesson 3: Multiply by 1-digit numbers

# Multiplying 2-digit by 1-digit

Learn to multiply a 2-digit number by a 1-digit number without regrouping.  In this video, we will multiply 32x3. Created by Sal Khan.

## Want to join the conversation?

• What is 32 x 45?
• You can do it by yourself. If you really don't know how to multiply multi digit numbers, then let me demonstrate. First, you multiply 32x5 and then add a zero at the ones place and do 32x4 and add the numbers. So that's the answer.
• At Sal says he likes to have the bigger number on top, but you can have them the other way round can't you.
• I also like to have the bigger number on the top.
• My name is Miranda Clarke.I like math but i can get confused on it some time.how do we tell if it is grater or less then.
• i like to think of the signs like an alaligators mouth or a crocks mouth. the gator or the crock both want more.

i hope this helps!
(1 vote)
• How would you do 3 digit numbers?
• hi guys it is my birthday
• That was a awesome video!