Multiplication strategies

Multiplication strategies

by Mr. Farmer

​Breaking Apart Method

• ​In this method, the goal is to break our numbers into smaller pieces.

• ​The pieces we use are place values.

  • ​Break apart the ones place values

  • ​Break apart the tens place values

  • ​Break apart the hundreds place values

• ​Example:

  • ​254

    • ​200

    • ​50

    • ​4

Multiple Select

Let's break 263 into its place values

• 260

• 200

• 60

• 3

Multiple Select

Let's break 123 into its place values.

• 3

• 23

• 20

• 100

​Two Factor Method

• ​In this method, we will break our numbers into to pieces, as we are working with two digit numbers.

​Two Factor Method

• ​After breaking apart the numbers, we make an array and solve the multiplication problem step by step.

• ​Once done, we add up our results.

​One Factor Method

• ​In this method, we only break one of our numbers into its place values.

• ​After this step, we just add our answers together.

Multiple Choice

15 x 32

• 480

• 482

• 470

• 840

Multiple Choice

How do you correctly set up an area model for the equation 42 x 71 ?

Multiple Choice

23 x 51

• 1,731

• 173

• 1,173

• 2,173

Multiple Choice

What is a factor?

• The answer to a multiplication problem.

• The part of a multiplication problem in parentheses.

• The answer to an addition problem.

• A number being multiplied by another number in a multiplication problem.

Multiple Choice

TRUE or FALSE: If the order of the factors in a multiplication problem are changed, it will change the product.

• TRUE

• FALSE

Multiple Choice

25 x 16

• 400
• 500
• 4,000
• 5,000