2 D x 2 D

2 Digit x 2 Digit Partial Product

I can find the product of a 2 digit by 2 digit multiplication problem using a strategy I have learned.

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​I DO

Watch as Mrs. Whitaker shows how to solve 99 x 98 using partial product.

Why she is doing this be sure to make sure your lids are on your markers.

​Find the product of 63 and 88.

WE DO

​Find the product of 29 and 70.

WE DO

​I am going to demonstrate how to use lattice to find the product of 78 and 94.

I DO

YOU DO

​A theater made $56 from soda sells in one hour. The theater sold 15 times as much on their popcorn sells in one hour. How much money did the theater make in one hour on popcorn? Use any strategy you like.

Multiple Choice

A theater made $56 from soda sells in one hour. The theater sold 15 times as much on their popcorn sells in one hour. How much money did the theater make in one hour on popcorn? Use any strategy you like.

• $840

• $740

• $390

• $615

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Multiple Choice

Find the mistake.

• Henry multiplied instead of added 20 and 40.

• Henry forgot to regroup.

• Henry added 30 and 40 instead of multiplying 3 and 40.

• Nothing is wrong

Reorder

Spiral Review: Put the steps in order to multiply 45 x 18 using open area model.

• Draw a box/window.

• Expand 45 into 40 and 5.

• Expand 18 into 10 and 8.

• Multiply

• Add the partial products (answers) together to get the real answer.

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2

3

4

5

• 1
• 2
• 3
• 4
• 5

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