math vocabulary

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Author:
dagoddard
ID:
28712
Filename:
math vocabulary
Updated:
2010-08-02 09:38:16
Tags:
basic math vocabulary
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Description:
jr. high level math terms
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  1. are multiplied together to get a number
    Example: 2 and 3 are factors of 6
    Factors
  2. can be divided evenly by a number
    Example: 5,10,15,20 are all multiples of 5
    Multiples
  3. a number with more than two factors
    Example: 10 has factors of 1, 2, 5, 10.
    Composite number
  4. a number with exactly 2 factors (the number itself and 1)
    Example: 7 has factors of 1 & 7.
    Prime number
  5. the highest factor that 2 numbers have in common.
    Example: the factors of 6 are 1, 2, 3, and 6. The factors of 9 are 1, 3, and 9.
    • Greatest Common Factor (GCF)
    • GCF of 6 and 9 is 3.
  6. the smallest multiple that 2 numbers have in common
    • Least Common Multiple (LCM)
    • Example: Multiples of 3 are 3, 6, 9, 12, 15.... Multiples of 4 are 4, 8, 12, 16.... The LCM of 3 and 4 is 12.
  7. a number, written as a product of its prime factors.
    • Prime Factorization
    • Example: 140 can be written as 2 x 2 x 5 x 7. (All of these are prime factors of 140).
  8. a fraction where the numerator and denominator are interchanged.
    • Reciprocal
    • Example: the reciprocal of 3/5 is 5/3
  9. a symbol or letter that can stand for a number in an expression or equation
    Variable
  10. the product of a number multiplied by itself
    • Perfect square
    • Ex: 9=3x3. 9 is a perfect square
  11. a fraction in which the numerator is larger than the denominator
    • Improper fraction
    • Ex: 9/4
  12. the sum of a whole number and a fraction
    • Mixed number
    • Ex: 5 1/4
  13. the distance around the outside of a circle
    Circumference
  14. the widest distance across a circle, always passes through the center
    Diameter
  15. the distance from any point on the circle to the center
    Radius

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