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 the process of 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 does an array represent in multiplication?

Back

An array is a visual representation of multiplication. It shows objects arranged in rows and columns. For example, 3 rows of 4 objects represent 3 x 4.

Tags

CCSS.4.NBT.B.5

Front

What is the equation for an array with 5 rows and 3 columns?

Back

5 x 3 = 15.

Tags

CCSS.3.OA.A.1

Front

How can you find the total number of objects in an array?

Back

Multiply the number of rows by the number of columns. For example, if there are 4 rows and 5 columns, the total is 4 x 5 = 20.

Tags

CCSS.3.OA.A.1

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 does it mean to have equal groups?

Back

Equal groups mean that each group has the same number of items. For example, if you have 4 groups of 3 apples, each group has 3 apples.

Tags

CCSS.2.OA.C.3

Front

What is the multiplication sentence for 2 rows of 5?

Back

2 x 5 = 10.

Tags

CCSS.3.OA.A.1

Front

How do you write a division sentence for an array?

Back

To write a division sentence, divide the total number of items by the number of items in one group. For example, if there are 15 items in total and 5 in each group, it is 15 ÷ 5 = 3.

Tags

CCSS.3.OA.A.2

Front

What is an example of a multiplication sentence?

Back

An example is 6 x 4 = 24.

Tags

CCSS.3.OA.A.1