Unit 3 Lesson 4 Common Multiples Standard NS

Unit 3, Lesson 4 Common Multiples Standard: NS 1. 2 Goal: To define and understand common multiples.

Common Multiples • When two different numbers share a multiple, it is a common multiple of both numbers. • 24 is a common multiple of 3 and 8. • 12 is a common multiple of 2, 3, 4, & 6.

Finding Common Multiples 1) List the multiples of each number. 2) Circle the ones they share. 4: 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, … 6: 6, 12, 18, 24, 30, 36, 42, 48, …. You try: Find the common multiples of 12 and 15. Find the common multiples of 7 and 10.

QUICK DRAW FOR POINTS! Review this week’s lessons to check for understanding.

PROBLEM #1 • Lesson 1 a) Define factor b) List all the factors of 48.

PROBLEM #2 • Lesson 1 a) Define multiple b) List all the multiples of 6 (up to 6● 12).

PROBLEM #3 • Lesson 2 a) Define prime number b) List 5 examples of a prime number.

PROBLEM #4 • Lesson 2 a) Define composite number. b) List 5 examples of composite numbers.

PROBLEM #5 • Lesson 3 a) Define prime factorization. b) Find the prime factorization of 24.

PROBLEM #6 • Lesson 3 a) Find the prime factorization of 72

PROBLEM #7 • Lesson 4 a) Define common multiples. b) Find the common multiples of 5 and 9.

PROBLEM #8 • Lesson 4 a) Find the common multiples of 3 and 15.