Download presentation

Published byOliver Gilmore Modified over 7 years ago

1
**Write factor pairs for each number. Use divisibility tests to help you!**

40 72 57 1 x 40 1 x 72 1 x 57 2 x 20 2 x 36 3 x 19 4 x 10 3 x 24 5 x 8 4 x 18 6 x 12 8 x 9

2
**Write factor pairs for each number. Use divisibility tests to help you!**

12 20 37 1 x 12 1 x 20 1 x 37 2 x 6 2 x 10 PRIME 3 x 4 4 x 5

3
PRIME NUMBERS A whole number with exactly 2 factors, 1 and itself 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

4
**Make a prime factor tree for each number.**

24 60 4 x 6 6 x 10 2 x 2 x 2 x 3 2 x 3 x 2 x 5 24 = 2 x 2 x 2 x 3 60 = 2 x 2 x 3 x 5 24 = 23 x 3 60 = 22 x 3 x 5

5
**You can use prime factorizations to find the GCF or to simplify fractions.**

24 60 4 x 6 6 x 10 2 x 2 x 2 x 3 2 x 3 x 2 x 5 GCF 2 x 2 x 3 = 12 2460 2 2 x 2 x 2 x 3 5 2 x 2 x 3 x 5

6
**Make a prime factor tree for each number to find the GCF.**

36 54 6 x 6 6 x 9 2 x 3 x 2 x 3 2 x 3 x 3 x 3 36 = 2 x 2 x 3 x 3 GCF 2 x 3 x 3 = 18 54 = 2 x 3 x 3 x 3

7
**Make prime factor trees for each number**

Make prime factor trees for each number. Use the prime factorizations to find the GCF and to simplify the fraction. 40 56 4 x 10 2 x 28 2 x 2 x 2 x 5 4 x 7 2 x 2 4056 5 2 x 2 x 2 x 5 = = 7 GCF x 2 x 2 = 8 2 x 2 x 2 x 7

8
List the factors of 15. 15 1 x 15 3 x 5 List the multiples of 15. 15, 30, 45, 60, 75, …

9
**List the first 5 multiples of each number.**

12 12, 24, 36, 48, 60 16 16, 32, 48, 64, 80 24 24, 48, 72, 96, 120

10
**Use the LCM to get a common denominator.**

7 12 28 12 12, 24, 36, 48, 60 = 48 5 16 15 16 16, 32, 48, 64, 80 = 48 24 24, 48, 72, 96, 120

11
**Use the LCM to get a common denominator.**

12 12, 24, 36, 48, 60 5 16 15 16 16, 32, 48, 64, 80 = 48 9 24 18 24 24, 48, 72, 96, 120 = 48

12
**Use the LCM to get a common denominator.**

5 12 10 12 12, 24, 36, 48, 60 = 24 16 16, 32, 48, 64, 80 11 24 11 24 24, 48, 72, 96, 120 = 24

13
List the factors of 32. 32 1 x 32 2 x 16 4 x 8

14
**Make a prime factor tree for 32.**

4 x 8 2 x 16 2 x 2 2 x 4 4 x 4 2 x 2 2 x 2 x 2 x 2 32 = 2 x 2 x 2 x 2 x 2 32 = 25

15
**Use the prime factorization to simplify**

12 32 12 32 2 x 6 2 x 16 2 x 3 4 x 4 2 x 2 x 2 x 2 12 = 2 x 2 x 3 3 8 What is the GCF? 32 = 2 x 2 x 2 x 2 x 2 4

16
**List factor pairs to find the GCF.**

18 30 1 x 18 1 x 30 GCF = 6 2 x 9 2 x 15 3 x 6 3 x 10 5 x 6 18 30 3 10 Use the GCF to simplify: ÷ 6 ÷ 6

17
**Write the expressions using exponents.**

2 x 3 x 3 x 5 x 5 = 2 x 32 x 52 5 x 5 x 5 x 7 x 7 = 53 x 72

18
Find the LCM. 3 8 15 8 8, 16, 24, 32, 40 = 40 4 10 16 10 10, 20, 30, 40 = 40

Similar presentations

© 2022 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