Arrays

Front

What is an array?

Back

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

Tags

CCSS.3.OA.A.1

Front

How many rows are in this array?

Back

Rows are the horizontal lines in an array.

Tags

CCSS.2.OA.C.4

Front

How many columns are in this array?

Back

Columns are the vertical lines in an array.

Tags

CCSS.2.OA.C.4

Front

What does repeated addition mean?

Back

Repeated addition is adding the same number multiple times, like 4 + 4 + 4.

Tags

CCSS.2.OA.C.4

Front

What is the equation for this array with 3 rows and 4 columns?

Back

3 + 3 + 3 + 3 = 12.

Tags

CCSS.2.OA.C.4

Front

How can you show an array using multiplication?

Back

You can use multiplication to show arrays, like 3 rows of 4 is 3 x 4.

Tags

CCSS.3.OA.A.1

Front

What is the total number of items in a 4x5 array?

Back

4 rows and 5 columns means 4 x 5 = 20 items.

Tags

CCSS.3.OA.A.1

Front

What does it mean if an array is rectangular?

Back

A rectangular array has different numbers of rows and columns.

Tags

CCSS.4.NBT.B.6

Front

Can an array have the same number of rows and columns?

Back

Yes, that is called a square array.

Tags

CCSS.4.NBT.B.6

Front

What is an example of a repeated addition sentence for a 5x4 array?

Back

5 + 5 + 5 + 5 = 20.

Tags

CCSS.3.OA.A.1