Lesson #4

Lesson #4

Learning strategies for multiplication

Today you will learn...

• How to use strategies to help you solve multiplication equations

• How to use an array

• How to use equal groups

• How to use repeated addition to help you in multiplication

• How to use a number line

Let's review

let's review

Multiple Choice

What is the product of this equation: 8 x 4 = ?

• 24

• 40

• 32

• 34

Multiple Choice

What is the property shown here:

• Associative property

• Commutative property

• Composite property

• Distributive property

These are some examples of strategies to help you solve multiplication problems

Hope these help you solve harder equationsl

Here is an array it is a strategy to help you solve multiplication problems

here is an example of an array

To use an array you put a row of numbers with the amount of objects being the numbers of the factors

These are some ways to solve multiplication problems

To use arrays you...

• Find the factors

• Put them into the array and make the model

• Count how many objects there are

• The amount of objects there are is the product

• ( You can use any object )

Use a array to solve the following problem

_

Multiple Choice

6 x 5 = ?

• 20

• 35

• 36

• 30

Poll

Do you think that arrays are a good strategy

• Yes

• No

• Kind of

• Not really

• I don't know

Another strategy that you can you can use is using another model called equal groups.

These are similar to arrays

Here is an example of equal groups

To use these you have to make one factor into the amount of groups and make the other factor go inside of the groups.

Multiple Select

Which are not multiplication strategies

• Commutative property

• Equal grouping

• Product strategy

• Arrays

Another strategy is to use a number line

Number lines can help you map out there the numbers you are multiplying.

Fill in the Blanks

What strategy is this

Since multiplication is repeated addition you can use repeated addition to solve multiplication problems

Repeated addition can also help you know times tables which you can memorize to solve easier multiplication problems

Fill in the Blanks

Use at least 2 strategies explained in these slides to solve this problem : 9 x 5

Use this video for extra review

It will be displayed in the next slide.

Basic multiplication (video) | Khan Academy

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Today you learned...

• How to use strategies to help solve multiplication problems

• How to use an array

• How to use equal groups

• How to use repeated addition to help you in multiplication

• How to use a number line

The end

Complete the homework for this lesson