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Math Lesson 7

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  • Is the number 8 prime or composite?
    Composite
  • What number below is a prime number ? 9 15 1 5
    5
  • Is the number 27 prime or composite?
    Composite
  • What are the factors for 18?
    1, 2, 3, 6, 9, 18
  • What are the FIRST five multiples of 2?
    2, 4, 6, 8, 10
  • What is a prime number?
    A whole number that has only one pair of factors
  • Is 9 a multiple of 3?
    Yes
  • What are the FIRST three multiples of 5?
    5, 10, 15
  • What is a composite number?
    A number that has more that has more than 1 pair of factors
  • List all the factors of 15
    1,3,5,15
  • Which number below is a factor of both 6 and 15 ? 9 6 5 3
    3
  • Which is not a factor of 20? 4 10 5 8
    8
  • Which of the following numbers is a factor of 6 ? 12 2 8 10
    2
  • Which number below is NOT a prime number? 3 7 21 17
    21
  • Is the number 17 prime or composite?
    Prime
  • Are all prime numbers are odd numbers?
    No
  • What are ALL of the factor pairs for 14?
    1 and 14; 2 and 7
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