3.OA.1 Arrays

Front

What is an array?

Back

An array is a way to organize objects in rows and columns.

Front

Which direction do columns go?

Back

Columns go up and down.

Front

Which direction do rows go?

Back

Rows go side to side.

Front

What multiplication expression does this array represent?
X X X X X
X X X X X
X X X X X
X X X X X
X X X X X
?

Back

5 x 5 = 25.

Front

What multiplication expression does this array represent?
X X X
X X X
X X X
?

Back

3 x 6 = 18.

Front

What is the area of an array with 4 rows and 3 columns?

Back

The area is 12 square units.

Front

What multiplication sentence matches this array?
X X X
X X X
X X X
X X X
?

Back

4 x 3 = 12.

Front

If an array has 5 rows and 2 columns, how many total items are there?

Back

There are 10 items.

Front

What is the product of 3 and 4?

Back

The product is 12.

Front

What is the product of 5 and 5?

Back

The product is 25.