Download presentation

Presentation is loading. Please wait.

1
Multiples and Factors Lesson 4.1

2
Multiples A multiple is formed by multiplying a given number by the counting numbers. The counting numbers are 1, 2, 3, 4, 5, 6, etc.

3
**Example: List the multiples of 4:**

So, the multiples of 4 are 4, 8, 12, 16, 20, 24, 28, etc. Counting Numbers

4
**What are the first five multiples of 13?**

13 x 1 =13 13 x 2 = 26 13 x 3 = 39 13 x 4 = 52 13 x 5 = 65 13, 26, 39, 52, 65

5
**Find the Missing Multiples**

24 30 6, 12, 18, ____, ____ ___, 6, 9, 12, ____, ____, 21 ___, 24, 36, 48, 60, ____ 15 18 3 72 12

6
Factors Factors are the numbers you multiply together to get a product. For example, the product 24 has several factors. 24 = 1 x 24 24 = 2 x 12 24 = 3 x 8 24 = 4 x 6 SO, the factors are 1, 2, 3, 4, 6, 8, 12, 24

7
**Finding Factors Start with 1 x the number. Try 2, 3, 4, etc.**

When you repeat your factors, cross out the repeat - you’re done at this point. If you get doubles (such as 4 x 4), then you’re done. Repeats or doubles let you know you’re done.

8
**What are the factors of 16? 1 x 16 2 x 8 3 x ?? 4 x 4**

3 is not a factor, so cross it out 4 x 4 doubles = done The factors of 16 are 1,2,4,8,16

9
**What are the factors of 18? 1 x 18 The factors are 1,2,3,6,9,18 2 x 9**

Repeat! Cross it out! We’re done!

10
**What are the factors of 7? The only factors of 7 are 1,7 1 x 7 2 x ??**

This works, but it is a repeat. We are done.

11
**Prime and Composite Numbers**

Prime numbers are numbers that only have two factors: one, and the number itself. EXAMPLES: 3, 5, 7, 11, 31 Composite numbers have more than two factors. EXAMPLES: 6, 18, 30, 100

12
Homework Time

Similar presentations

Presentation is loading. Please wait....

OK

1

1

© 2019 SlidePlayer.com Inc.

All rights reserved.

To make this website work, we log user data and share it with processors. To use this website, you must agree to our Privacy Policy, including cookie policy.

Ads by Google