Multiplication by Grouping

Front

What is multiplication by grouping?

Back

Multiplication by grouping is a method of multiplying numbers by organizing them into groups to make calculations easier.

Front

What is the product of 2 x 3 x 4?

Back

24

Front

How many tables are in 2 rows if each row has 6 tables?

Back

12 tables.

Front

How many seats are in the lunchroom if there are 2 rows of tables with 6 tables in each row and 6 seats at each table?

Back

36 seats.

Front

Which property of multiplication states that changing the order of the factors does not change the product?

Back

Commutative Property of Multiplication.

Front

Which property of multiplication states that changing the grouping of the factors does not change the product?

Back

Associative Property of Multiplication.

Front

If Mrs. Hodge has 3 packets of pencils with 5 blue pencils and 7 red pencils in each, how many blue pencils does she have in total?

Back

15 blue pencils.

Front

If Mrs. Hodge has 3 packets of pencils with 5 blue pencils and 7 red pencils in each, how many red pencils does she have in total?

Back

21 red pencils.

Front

How many more red pencils than blue pencils does Mrs. Hodge have?

Back

6 more red pencils.

Front

What is the equation for finding the total number of seats in the lunchroom?

Back

Total seats = (Number of rows) x (Tables per row) x (Seats per table) = 2 x 6 x 6.