Arrays

Front

What is an array?

Back

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

Front

How many rows are in an array?

Back

Rows are the horizontal lines in an array.

Front

How many columns are in an array?

Back

Columns are the vertical lines in an array.

Front

What direction do rows go?

Back

Rows go across.

Front

What direction do columns go?

Back

Columns go up and down.

Front

What is repeated addition?

Back

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

Front

How can you represent an array with repeated addition?

Back

You can write a repeated addition sentence that shows how many times to add a number.

Front

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

Back

There are 3 rows x 4 columns = 12 items.

Front

What is the formula to find the total number of items in an array?

Back

Total items = number of rows x number of columns.

Front

Can an array have different numbers of items in each row?

Back

No, in a proper array, each row has the same number of items.