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 can we represent an array using repeated addition?

Back

By adding the number of items in each row.

Front

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

Back

12 items (3 x 4 = 12).

Front

What is the repeated addition for an array with 4 rows of 3?

Back

3 + 3 + 3 + 3 = 12.

Front

What is the repeated addition for an array with 5 rows of 5?

Back

5 + 5 + 5 + 5 + 5 = 25.

Front

If you have 4 columns of 4, what is the total number of items?

Back

16 items (4 x 4 = 16).

Front

What does it mean to 'count by rows' in an array?

Back

It means to add the number of items in each row together.

Front

What does it mean to 'count by columns' in an array?

Back

It means to add the number of items in each column together.