Multiplication & Division using Arrays and Equal Groups

Front

What is multiplication?

Back

Multiplication is a way to add a number to itself a certain number of times. For example, 3 x 4 means adding 3 four times: 3 + 3 + 3 + 3 = 12.

Tags

CCSS.3.OA.A.1

Front

What is division?

Back

Division is splitting a number into equal parts. For example, 12 ÷ 3 means splitting 12 into 3 equal groups, which gives 4.

Tags

CCSS.3.OA.A.2

Front

What is an array in math?

Back

An array is a way to organize objects in rows and columns. For example, 3 rows of 4 objects each can be represented as an array.

Tags

CCSS.3.OA.A.1

Front

How do you write a multiplication equation for an array?

Back

To write a multiplication equation for an array, count the number of rows and the number of columns. For example, if there are 3 rows and 4 columns, the equation is 3 x 4.

Tags

CCSS.3.OA.A.1

Front

What does the equation 5 x 3 = 15 represent?

Back

It represents that there are 5 groups of 3, which equals 15 in total.

Tags

CCSS.3.OA.A.1

Front

What does the equation 14 ÷ 2 = 7 represent?

Back

It represents that if you split 14 into 2 equal groups, each group has 7.

Tags

CCSS.3.OA.A.2

Front

What is the relationship between multiplication and division?

Back

Multiplication and division are inverse operations. If 3 x 4 = 12, then 12 ÷ 4 = 3.

Tags

CCSS.4.NBT.B.6

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 4 groups of 2 apples, each group is equal.

Tags

CCSS.2.OA.C.3

Front

How can you find the total number of items in equal groups?

Back

To find the total, multiply the number of groups by the number of items in each group. For example, 4 groups of 2 items is 4 x 2 = 8.

Tags

CCSS.2.OA.C.3

Front

What is the multiplication sentence for 2 groups of 5?

Back

The multiplication sentence is 2 x 5 = 10.

Tags

CCSS.3.OA.A.1