Arrays Practice 2.OA.4

Front

What is an array?

Back

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

Front

What do we call the horizontal lines in an array?

Back

Rows

Front

What do we call the vertical lines in an array?

Back

Columns

Front

How do you determine if a number is even?

Back

A number is even if it can be divided by 2 without a remainder.

Front

How do you determine if a number is odd?

Back

A number is odd if it cannot be divided by 2 evenly.

Front

What direction do rows go in an array?

Back

Rows go across.

Front

What direction do columns go in an array?

Back

Columns go up and down.

Front

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

Back

There are 12 items (4 rows x 3 columns = 12).

Front

What is the first row in an array?

Back

The first row is the top horizontal line of items.

Front

What is the first column in an array?

Back

The first column is the left vertical line of items.