Math

Card Set Information

Author:
tera94carter
ID:
34136
Filename:
Math
Updated:
2010-09-11 22:43:56
Tags:
Algebra
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Description:
Adding, subtracting, Multiplying, Dividing Integers
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  1. What are natural numbers?
    1, 2, 3, ....
  2. Find LCM of 6 and 15.
    note:what is the smallest number they have in common
    • 6: 6, 12, 18, 24,30, 36
    • 15: 15, 30, 45, 60
  3. Find the LCM of 6 and 15
    note: the smallest common number by prime factorization
    • 6: 2*3
    • 15: 3*5
    • = 2*3*5=30
  4. What are rational numbers?
    • Numbers that end or terminating, repeating decimal
    • ex: 3.5, 0.454545...., -0.375, 3, -11, -4/5,
  5. * two positive integers, the product is positive
    ex: 9*2
    18
  6. two real numbers with different signs is negative
    ex: -4*3=
    -4*1=
    • -12
    • -4
  7. * two negative integers the product is positive
    ex: -4*-2=
    8
  8. write 24/30 in lowest terms
    • 24 2*2*2*3
    • 40 2*2*2*5
    • cross out common factors; left with 3/5

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