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 find the total number of items in an array?

Back

Multiply the number of rows by the number of columns.

Front

If there are 3 rows and 4 columns, how many items are in the array?

Back

3 rows x 4 columns = 12 items.

Front

What does repeated addition mean?

Back

Repeated addition is adding the same number several times, like 3 + 3 + 3 = 9.

Front

How can you represent an array with repeated addition?

Back

You can write it as the number of rows multiplied by the number of items in each row.

Front

If an array has 5 rows of 2, what is the repeated addition sentence?

Back

2 + 2 + 2 + 2 + 2 = 10.

Front

What is the difference between rows and columns?

Back

Rows go across (horizontally) and columns go up and down (vertically).

Front

How many columns are in an array with 4 rows and 3 items in each row?

Back

There are 3 columns.

Front

If you have 6 rows of 5, what is the total number of items?

Back

6 rows x 5 columns = 30 items.

Front

What is the repeated addition for 4 rows of 3?

Back

3 + 3 + 3 + 3 = 12.