Question | Answer |
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 |