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
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How do I find GCF using a Factor Tree?
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How do I find GCF using a the Listing Method?
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How do I find LCM using the Listing Method?
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Holt McDougal Lesson Video on Listing to find LCM
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What is the Distributive Property?
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Helpful Tools
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Am I Using GCF or LCM in this Problem?
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Multiples Game
Pumpkin Patch Catching Multiples Game
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Practice Problems
Prime or Composite
See textbook page 166
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GCF Factor Tree
See textbook page 171
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LCM Listing Method
See textbook page 188
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Distributive Property
See textbook page 144
Unit 1B Vocabulary
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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.)
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