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Reteach: Division & MultiplesMultiplication and division are inverse operations. This means that one can be “undone” by the other. Because they are related in this way, you can use division to decide whether or not one number is a multiple of another. To decide whether 18 is a multiple of 5, determine whether or not 5 can divide evenly into 18. Since there is a remainder of 3, 5 does not divide evenly into 18. So,18 is not a multiple of 5. To decide whether 36 is a multiple of 9, determine whether or not 9 can divide evenly into 36. Since there is no remainder, 9 does divide evenly into 36. So, 36 is a multiple of 9. 

Reteach: Guided Practice

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Independent Practice: Division & MultiplesUse division to answer the questions below. 


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Related Resources
The various resources listed below are aligned to the same standard, (4OA04) taken from the CCSM (Common Core Standards For Mathematics) as the Factors and multiples Worksheet shown above.
Find all factor pairs for a whole number in the range 1 to 100. Recognize that a whole number is a multiple of each of its factors. Determine whether a given whole number in the range 1 to 100 is a multiple of a given onedigit number. Determine whether a given whole number in the range 1 to 100 is prime or composite.
Chart
Prime Numbers
 Prime Numbers to 100 ( Number Square)
 List of Prime Numbers – (up to 251)
Example/Guidance
 What Factors Are
 Lesson on Factors
 Lesson on Multiples
 Finding Prime & Composite Numbers
 Prime Factorization With Factor Trees
Game
Target Game
Number line
 Skip Counting – By 2, 3, 4, 5, & 6 (small marks at 1s, large marks at intervals and no numbers)
 Skip Counting – By 7, 8, 9, 11, & 12 (small marks at 1s, large marks at intervals and no numbers)
 Skip Counting – By 11 (small marks at 1s, large marks every 11 and no numbers)
 Skip Counting – By 12 (small marks at 1s, large marks every 12 and no numbers)
Worksheet
 Factors (3page worksheet. Includes Guided Practice)
 Factors (Prime & Composite Numbers) (3page worksheet. Includes Guided Practice)
 Multiples (2page worksheet. Includes Guided Practice)
 Finding Factors (1 of 2)
 Finding Factors (2 of 2)
 Factors – Prime & Composite Numbers (1 of 2)
 Factors – Prime & Composite Numbers (2 of 2)