# Multiples of Four

Contributor: Meghan Vestal. Lesson ID: 11321

If you know your two-times table, you can easily learn your four-times table. Interesting, yes? Can you figure out why that is? We have a song, a quiz, flashcards, and projects for you!

categories

## Arithmetic, Operations and Algebraic Thinking, Whole Numbers and Operations

subject
Math
learning style
Auditory, Visual
personality style
Lion, Beaver
Intermediate (3-5)
Lesson Type
Quick Query

## Lesson Plan - Get It!

Audio:

Look at this chart comparing two- to four-times tables.

• What do you notice?
 2 x 3 = 6 4 x 3 = 12 2 x 5 = 10 4 x 5 = 20 2 x 8 = 16 4 x 8 = 32 2 x 10 = 20 4 x 10 = 40
• What do you notice when you look at the chart?

List any unique patterns or observations you make. Hold on to your list. You will review it after you practice some of the times tables you have already learned.

You have learned half of your multiplication tables so far!

You can multiply by two, three, five, ten, and eleven. Review what you have learned by practicing a few problems.

If you are still struggling with multiplying by any of these numbers, find the Related Lesson you need to review (right-hand sidebar) and practice before moving on with this lesson.

You are learning one set of multiplication tables at a time because trying to learn nearly 150 multiplication facts at once can be overwhelming! If you learn them gradually, you'll know them all in no time flat!

Learning 12 multiplication facts at a time makes it much easier.

In this lesson, you will learn the four-times tables.

Start by looking at the multiplication table below. The column and row of the four multiplication facts have been highlighted.

• Do you notice any patterns or repeated numbers?

You may have noticed that in both the row and the column, the digit in the ones place of each number (including two-digit numbers) repeats in a pattern: 4, 8, 2, 6, 0.

• Did you notice this pattern when first looking at the multiplication table?

Find this pattern in the row and then look at the question from the beginning of the lesson.

• Did you notice a relationship between the two- and four-times tables?

If uncertain, look at the complete list comparing multiples of two and four.

 2 x 1 = 2 4 x 1 = 4 2 x 2 = 4 4 x 2 = 8 2 x 3 = 6 4 x 3 = 12 2 x 4 = 8 4 x 4 = 16 2 x 5 = 10 4 x 5 = 20 2 x 6 = 12 4 x 6 = 24 2 x 7 = 14 4 x 7 = 28 2 x 8 = 16 4 x 8 = 32 2 x 9 = 18 4 x 9 = 36 2 x 10 = 20 4 x 10 = 40 2 x 11 = 22 4 x 11 = 44 2 x 12 = 24 4 x 12 = 48

• Did you notice multiples of four are always double-multiples of two?

If you are unsure what 4 x 9 is, multiply 2 x 9 (18) and add the sum to itself (18 + 18 = 36). This is because four is twice the amount of two.

Try it with some small numbers to test it out. For example, 2 x 3 = 6.

If you want to use this method to find the answer to 4 x 3, all you need to do is add 6 + 6, which equals 12.

• Look at the chart above; does 4 x 3 = 12?

Try this trick using a few more numbers! Then, add this trick to the foldable you have been creating. You can add this information under the 4 flap.

Now, practice the four times tables with the song and video below. As you learn the multiples of four, sing along with the song.

After you have listened to the song a few times, move to the Got It? section to practice solving multiplication problems with four.

Interactive Video