Math

What are natural numbers?

1, 2, 3, ....
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
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
What are rational numbers?
- Numbers that end or terminating, repeating decimal
- ex: 3.5, 0.454545...., -0.375, 3, -11, -4/5,
* two positive integers, the product is positive
ex: 9*2

18
two real numbers with different signs is negative
ex: -4*3=
-4*1=
- -12
- -4
* two negative integers the product is positive
ex: -4*-2=

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

Author

tera94carter

34136

Card Set

Math

Description

Adding, subtracting, Multiplying, Dividing Integers

Updated

2010-09-12T02:43:56Z

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