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Math 6:Whole Numbers
Prime and Composite numbers
Getting started
 3x6 = 18
 3 and 6 are FACTORS of 18.
 What are some other factors of 18?
 1 and 18, 2 and 9.
 Factor...
Let’sTry it!
 How many cubes are in the rectangle?
 What are factors of 16?
 Can you make another rectangle with
16 cub...
Explore
 Create as many rectangles for the numbers 2 to 20.
 Create aT-chart and fill in all the factors
Connect
Number Factors
2 1,2
3 1,3
4 1,2,4
5
6
7
8
9
10
Connect
 How do you know you have found all the rectangles for each
number?
 What are the factors of 5? How do you know?...
Connect
 Suppose you have 23 tiles.You can only make one rectangle
because factors of 23 are only 1 and 23.
 A number th...
In ClassWork
 pg. 46 #1, 4, 5, 8, 11
HOMEWORK
 Pg. 20
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Prime and composite numbers

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Prime and composite numbers

  1. 1. Math 6:Whole Numbers Prime and Composite numbers
  2. 2. Getting started  3x6 = 18  3 and 6 are FACTORS of 18.  What are some other factors of 18?  1 and 18, 2 and 9.  Factors: Numbers that are multiplied to form a product
  3. 3. Let’sTry it!  How many cubes are in the rectangle?  What are factors of 16?  Can you make another rectangle with 16 cubes?
  4. 4. Explore  Create as many rectangles for the numbers 2 to 20.  Create aT-chart and fill in all the factors
  5. 5. Connect Number Factors 2 1,2 3 1,3 4 1,2,4 5 6 7 8 9 10
  6. 6. Connect  How do you know you have found all the rectangles for each number?  What are the factors of 5? How do you know? (Make a rectangle with 5 tiles)  How many rectangles do you think you will be able to make with 11 tiles?
  7. 7. Connect  Suppose you have 23 tiles.You can only make one rectangle because factors of 23 are only 1 and 23.  A number that has only two factors: 1 and itself is called a PRIME NUMBER.  Suppose you have 24 tiles.You can make more than on rectangle because the factors of 24 are 1,2,3,4,6,8,12, and 24.  A number that has more than two factors is called a COMPOSITE NUMBER.
  8. 8. In ClassWork  pg. 46 #1, 4, 5, 8, 11
  9. 9. HOMEWORK  Pg. 20

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