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Reteach: FactorsMultiples are skipcounting numbers, or “count by” numbers. To find the multiples of five, we count by 5s. To find the multiples of ten, we count by 10s. To find the multiples of twelve, we count by 12s, and so on.

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Reteach: Guided Practice

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Independent Practice: FactorsDirections:


1. Find all the factors of 24
1 x 24 = 24 2 x 12 = 24 3 x 8 = 24 4 x 6 = 24 The factors of 24 are: 1 , 2 , 3 ,4 , 6 , 8 , 12 , 24 
2. Find all the factors of 16
1 x 16 = 16 2 x 8 = 16 4 x 4 = 16
The factors of 16 are: 1 , 2 , 4 , 8 , 16 
1. Find all the factors of 20
1 x 20 = 20 2 x 10 = 20 4 x 5 = 20
The factors of 20 are: 1 , 2 , 4 , 5 ,10 , 20

2. Find all the factors of 18
1 x 18 = 18 2 x 9 = 18 3 x 6 = 18
The factors of 18 are: 1 , 2 , 3 , 6 , 9 , 18 
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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 (Prime & Composite Numbers) (3page worksheet. Includes Guided Practice)
 Multiples (2page worksheet. Includes Guided Practice)
 Division & 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)