Two by Two Multiplication Lesson

2 digit by 2 digit multiplication

Start with the bottom number

Multiply the bottom Ones by the top Ones

Start with the bottom number

Carry the number if you need

Start with the bottom number

• Multiply the Bottom Ones by the top Tens
  

• Don't forget to add the carried number!

Move on over!

• Move over to the bottom Tens place.

  • Add a Zero placeholder under the answer from your Ones place multiplication

• You can also cross off the ones in the bottom number and anything you already carried

Keep Multiplying

• Multiply the Bottom tens by the top ones

  • Carry anything that you need

• Make sure you line up your answer starting under the tens place

Keep Multiplying

• Multiply the Bottom tens by the top tens

  • don't forget to add the carried number!

It all adds up!

• Add up your answers and don't forget your comma!

Multiple Choice

What do we do first?

• Multiply the bottom ones by top ones

• Multiply the tens

• Put a 0 under the ones

• add up

Multiple Choice

When we move over to the tens on the bottom what do you have to do?

• nothing

• Add a 0 under the ones

• multiply the numbers

Multiple Choice

The final step is to...

• multiply the numbers

• add the top numbers

• Subtract the numbers

• add up and put in a comma