Unit 2, Lesson 28-- Splitting Arrays

Lesson 28-- Splitting Arrays

Hello Mathematicians! Today we will look at how to make the "hard" multiplication facts easier.

Take a look at this image. In your math notebook, answer this question: How are these arrays of donuts the SAME but DIFFERENT?

Part 1 Directions:

In the interactive below, make an array to show 7 X 4.
Now use different colored tiles to break 7 X 4 into two smaller arrays.
In your notebook, write the multiplication expressions for each smaller array: (__ X __) + (__ X __)
Add the partial products to get the total product: __ + __ = __ , so 7 X 4 = __

Part 2 Directions:

In your notebook, draw an array to show 9 X 7.
Now break 9 X 7 into two smaller arrays.
In your notebook, write the multiplication expressions for each smaller array: (__ X __) + (__ X __)
Add the partial products to get the total product: __ + __ = __ , so 9 X 7 = __

[CC BY 4.0] UNLESS OTHERWISE NOTED | IMAGES: LICENSED AND USED ACCORDING TO TERMS OF SUBSCRIPTION

Georgia Department of Education, Math