Hip Hip Array!

We have been exploring arrays!

Row x Column = Product

The multiplication for the array above is

3 x 4 = 12

because it has 3 rows of 4.

When the factors are different digits, 
the arrays are in the shape of a rectangle. 

When the factors are the same digit, 
the array is a square!

Here are some arrays we found around campus!

3 rows of 3 

3 x 3 = 9 hearts

3 rows of 4 

3 x 4 = 12 green squares

3 rows of 11 

3 x 11 = 33 rectangles

10 rows of 10 

10 x 10 = 100 squares

This is a very famous array!

5 rows of 7 

5 x 7 = 35 dots

3 rows of 4

3 x 4 = 12 window panes

Do you see any arrays in your life? Tell us about them in the comments!

Tutorial: A Multiplication Strategy

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We have been learning about multiplication. 

Sometimes we encounter a large multiplication sentence and we don't know the product. We learned a strategy called:  Break the Large Array into Two Smaller Arrays and Add the Products. 

Here is a fabulous tutorial explaining the process 

for 5 x 7 = ?

 


Here is another tutorial. Again, it is modeling how to split a large array into two smaller arrays to get the final product. 

What did you think of the multiplication strategy?

What did you think of the tutorial?

Give us a large multiplication sentence that we can practice splitting into two smaller arrays to solve.