Equal Groups and Arrays

Front

What is an equal group?

Back

An equal group is a set of items that are the same in number. For example, if you have 3 groups of 4 apples, each group has the same number of apples.

Front

What is an array?

Back

An array is a way to arrange objects in rows and columns. For example, 3 rows of 4 stars can be shown as: ★★★★ ★★★★ ★★★★.

Front

How do you write a multiplication equation for an array?

Back

You can write a multiplication equation by multiplying the number of rows by the number of items in each row. For example, 3 rows of 4 is written as 3 x 4.

Front

What does repeated addition mean?

Back

Repeated addition means adding the same number several times. For example, 4 + 4 + 4 is the same as 3 x 4.

Front

What is the multiplication sentence for 5 groups of 3?

Back

The multiplication sentence is 5 x 3 = 15.

Front

What is the repeated addition for 5 groups of 3?

Back

The repeated addition is 3 + 3 + 3 + 3 + 3 = 15.

Front

How can you represent 4 x 2 using an array?

Back

You can represent 4 x 2 as 4 rows of 2 items each, like this: 2 2 2 2.

Front

What is the total number of items in 6 groups of 2?

Back

The total number of items is 6 x 2 = 12.

Front

What is the equation for 3 rows of 5?

Back

The equation is 3 x 5 = 15.

Front

How do you find the total in an array of 4 rows and 3 columns?

Back

You multiply the number of rows by the number of columns: 4 x 3 = 12.