Math Arrays

Front

What is an array?

Back

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

Tags

CCSS.3.OA.A.1

Front

How do you count the total number of items in an array?

Back

You can count the number of rows and multiply it by the number of items in each row.

Tags

CCSS.2.OA.C.4

Front

What does 'rows' mean in an array?

Back

Rows are horizontal lines of items.

Tags

CCSS.2.OA.C.4

Front

What does 'columns' mean in an array?

Back

Columns are vertical lines of items.

Tags

CCSS.3.OA.A.1

Front

If there are 3 rows of 4, how many total items are there?

Back

3 rows x 4 items = 12 items.

Tags

CCSS.3.OA.A.3

Front

What addition sentence matches 2 rows of 5?

Back

5 + 5 = 10.

Tags

CCSS.2.OA.C.4

Front

If an array has 4 rows and 3 columns, how many items are there?

Back

4 rows x 3 columns = 12 items.

Tags

CCSS.2.OA.C.4

Front

What is the difference between rows and columns?

Back

Rows go side to side, while columns go up and down.

Tags

CCSS.5.G.A.1

Front

How can you represent the number 18 using an array?

Back

You can use 3 rows of 6 or 2 rows of 9.

Tags

CCSS.3.OA.A.1

Front

What is the total number of items in 2 rows of 4?

Back

2 rows x 4 items = 8 items.

Tags

CCSS.2.OA.C.4