Arrays

Front

What is an array?

Back

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

Front

How do you count the number of rows in an array?

Back

You count how many horizontal lines of objects there are.

Front

How do you count the number of columns in an array?

Back

You count how many vertical lines of objects there are.

Front

What goes across in an array?

Back

Rows go across (horizontally).

Front

What goes down in an array?

Back

Columns go down (vertically).

Front

If an array has 4 rows and 2 columns, how many total items are there?

Back

There are 8 items (4 rows x 2 columns = 8).

Front

What is repeated addition?

Back

Repeated addition is adding the same number several times.

Front

How can you represent an array with repeated addition?

Back

You can write a sentence like 3 + 3 + 3 = 9 for an array with 3 rows of 3.

Front

If you have 5 rows of 5, what is the repeated addition sentence?

Back

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

Front

What is the difference between rows and columns?

Back

Rows are horizontal, and columns are vertical.