What's in Unit 1B?
Unit 1B covers the second half of unit 1, which includes GCF, LCM, Distributive Property and Division of Fractions.
Is this number prime or composite?
Study Jams Step-by-Step Interactive Video
How do I find GCF using a Factor Tree?
How do I find GCF using a the Listing Method?
How do I find LCM using the Listing Method?
Holt McDougal Lesson Video on Listing to find LCM
What is the Distributive Property?
Helpful Tools
Am I Using GCF or LCM in this Problem?
Multiples Game
Pumpkin Patch Catching Multiples Game
Practice Problems
Prime or Composite
See textbook page 166
GCF Factor Tree
See textbook page 171
LCM Listing Method
See textbook page 188
Distributive Property
See textbook page 144
Unit 1B Vocabulary
GCF (Greatest Common Factor): The largest factor that two or more numbers have in common.
LCM (Least Common Multiple): The smallest multiple (other than zero) that two or more numbers have in common.
Distributive Property: shows us that the sum of two addends (numbers) multiplied by another number, will equal the sum of the product of each addend and the number.
Reciprocal: Two numbers whose product is 1. A factor by which you multiply a given number so that their product is 1.
Inverse Operations: Pairs of operations that undo each other. (Addition and subtraction are inverse operations; Multiplication and division are inverse operations.)
