Using Order and Grouping to Multiply

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.

Front

What does the order of numbers in multiplication mean?

Back

The order of numbers in multiplication does not change the result. For example, 2 x 3 is the same as 3 x 2.

Front

What is grouping in multiplication?

Back

Grouping in multiplication means organizing numbers into groups to make calculations easier. For example, (2 x 3) x 4 can be calculated as 2 x (3 x 4) and will give the same result.

Front

Calculate: 7 x 2 x 2 = ?

Back

28

Front

Marlee had 3 boxes of bracelets. Each box had 4 bracelets. Each bracelet had 2 beads. How many beads did Marlee have?

Back

24

Front

Calculate: 3 x 3 x 2 = ?

Back

18

Front

Raegan had 7 boxes of grapes. Each box had 3 bunches of grapes. Each bunch had 2 grapes. How many grapes did Raegan have?

Back

42

Front

Calculate: (2 x 3) x 2 = ?

Back

12

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).

Front

What is the commutative property of multiplication?

Back

The commutative property states that changing the order of the numbers in a multiplication problem does not change the product. For example, 4 x 5 = 5 x 4.