Partial Products and Multiplication

Multiplication using Area Models and Partial Products

Videos

https://youtu.be/vbGwcvXgDlg

https://youtu.be/EupNW_6jPok

Area Model Steps

• Decompose our numbers

• Build our area model

• Find the area of each box

• Add the products from each box together

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67 x 7

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Solve this multiplication problem using an area model 

27 x 58 =

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Solve this problem using an area model

32 x 72

Poll

How do you feel about multiplication using area models?

• 1- I have no clue what I am doing.

• 2- I can't do it on my own, but once someone explains it to me and walks me through the problem it makes sense.

• 3- It takes some work, but I can successfully use area models to solve double digit multiplication problems.

• 4- I completely understand are models and how to use them to solve double digit multiplication problems.

Partial Products Steps

• Decompose both numbers

• Multiply each part of the first number by both parts of the second number

• Add all of the partial products together to find the final product

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82 x 9

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Solve this problem using partial products

12 x 57

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Solve this problem using partial products

84 x 19

Poll

How do you feel about multiplication using partial products?

• 1- I have no clue what I am doing.

• 2- I can't do it on my own, but once someone explains it to me and walks me through the problem it makes sense.

• 3- It takes some work, but I can successfully use partial products to solve double digit multiplication problems.

• 4- I completely understand partial products and how to use them to solve double digit multiplication problems.

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87 x 98

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77 x 36 =

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292 x 41

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356 x 65

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419 x 52