# Math

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The flashcards below were created by user tera94carter on FreezingBlue Flashcards.

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

## Card Set Information

 Author: tera94carter ID: 34136 Filename: Math Updated: 2010-09-12 02:43:56 Tags: Algebra Folders: Description: Adding, subtracting, Multiplying, Dividing Integers Show Answers:

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