Area Model Multiply Two-Digit Numbers, Quickly Core

Gina has 165 blocks
					
  • One 100 block
  • Six 10 blocks
  • Five 1 blocks
				
She wonders if they can make a rectangle. 
					
Help her move the tiles.
Click the 10s to spin them.

Make a rectangle
*Hint: tap/click 10s to spin
What are the edge lengths? top: bottom: left: right:

    Gina needs to multiply:
					
	   23 x 14 
					
She decides to think of it as a rectangle's area, and will attempt to fill it with:

  • Some 100 block
  • Some 10 blocks
  • Some 1 blocks

How many of each tile
will she need?
• 100s • 10s • 1s
Check your numbers by completing the rectangle and making sure you don't have any extra pieces or missing pieces.

    "Wow!" Says Gina,
					
"Moving 12 unit tiles took a while. There must be a quicker way"

Is there a way to separate 23 and 14 into numbers that are simpler to multiply?

Slide the purple dots to show your idea.

Now that it is simpler,
what are the areas? • area A = • area B = • area C = • area D =
These four areas that are parts of the whole area are called

"partial products"

What would you get it they are added together?