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# ch.4 fact,fract,expo

what are the rules of divisibility for 2,3,4,5,6,8,9,10 2:if it ends in an even number 3:if the sum of the digits is divisible by 3 4: if the last two numbers are divisible by 4 5: if it ends in 5 or 0 6: if its divisible by 2 and 3 8:if the last 3 digits are divisible by 8 9:same as 3 10: ends in 0
what is a factor any number that can be divided evenly into another number
what is the order of operations parenthatseees exponents multiply divide add subtract
what is an exponet a method of writing repetitive multiplication. how many times to multiply a number by itself.
-3^2 means... -3 to the 2nd power
what is a prime number a number that can only be divided by 1 and itself
what is a composite number a number that can be divided by more than 1 and itself
what is the GFC the greatest number divisible that divides into another number
what is a variable GFC ex : x^2
what is prime factorizaton the break down of composite numbers into smaller numbers
how do you find prime factorization using the GFC prime trees
what is the difference between -3^2 and (-3)^2 -3^2 = -6 (-3)^2 = 6
what is the base the base is the number you are multiplying by
what is the power the power is the number of times you are multiplying the base
anything to the power of 0 is ... 1
anything to the power of 1 is ... itself
rational number any number that can be written in the form of a/b where b is not 0
how to write negative rational numbers the bottom number can not be negative
power to the power rule multiply the power
the zero exponent rule any exponent that is zero the answer is 1
the negative exponent rule find the reciprocal
example of writing without zero or negative exponents bring the negatives to the opposite side of the fraction bar and make them positive and the zeros become ones and are not in the final answer
example of writing without a fraction bar bring the numbers from the bottom to the top and rewrite them as their reciprocal
Emily Berg Period 3
Created by: bergemily