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 5 columns, how many items are there?

Back

15 items (3 x 5 = 15).

Front

What does repeated addition mean?

Back

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

Front

How can you express 4 + 4 + 4 using groups?

Back

You can say it is 3 groups of 4.

Front

What is the repeated addition for 3 rows of 4?

Back

4 + 4 + 4 = 12.

Front

If there are 5 tables and 4 people can sit at each, how many people can sit in total?

Back

20 people (5 x 4 = 20).

Front

What is the repeated addition for 2 rows of 8?

Back

8 + 8 = 16.

Front

What is a multiplication sentence?

Back

A multiplication sentence shows how many groups of a number there are, like 4 x 3.

Front

How do you write 5 + 5 + 5 + 5 as a multiplication sentence?

Back

4 x 5.