Multiplying using grouping

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 does grouping mean in multiplication?

Back

Grouping in multiplication means to combine numbers in parentheses first before multiplying them with other numbers. For example, in 2 x (3 x 4), you calculate 3 x 4 first.

Tags

CCSS.3.OA.B.5

Front

What is the associative property of multiplication?

Back

The associative property states that when multiplying three or more numbers, the way in which the numbers are grouped does not change the product. For example, (2 x 3) x 4 = 2 x (3 x 4).

Tags

CCSS.3.OA.B.5

Front

Calculate: 8 x (2 x 3)

Back

48

Tags

CCSS.3.OA.B.5

Front

Calculate: (2 x 2) x 7

Back

28

Tags

CCSS.3.OA.B.5

Front

Calculate: 2 x (6 x 2)

Back

24

Tags

CCSS.3.OA.B.5

Front

Calculate: 4 x (1 x 9)

Back

36

Tags

CCSS.3.OA.B.5

Front

Calculate: 4 x (1 x 5)

Back

20

Tags

CCSS.3.OA.B.5

Front

What is the distributive property of multiplication?

Back

The distributive property states that a(b + c) = ab + ac. It allows you to multiply a number by a group of numbers added together.

Tags

CCSS.3.OA.B.5

Front

What is a factor in multiplication?

Back

A factor is a number that is multiplied by another number to get a product. For example, in 3 x 4, both 3 and 4 are factors.

Tags

CCSS.4.OA.B.4