Arrays

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 lines that go up and down in an array?

Back

Columns.

Front

What do we call the lines that go across in an array?

Back

Rows.

Front

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

Back

Multiply the number of rows by the number of columns.

Front

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

Back

12 items (3 x 4 = 12).

Front

What is repeated addition?

Back

Repeated addition is adding the same number multiple times, like 3 + 3 + 3 + 3.

Front

How can you represent an array with repeated addition?

Back

You can write it as the number of items in one row added together for each row.

Front

If there are 4 rows of 3 apples, how can you write that as a repeated addition sentence?

Back

3 + 3 + 3 + 3 = 12.

Front

What is the total number of rows in an array?

Back

The total number of rows is how many lines go across.

Front

What is the total number of columns in an array?

Back

The total number of columns is how many lines go up and down.