###
First 10 Prime numbers

2, 3, 5, 7, 11, 13, 17, 19, 23, 29

with 2 being the only even prime

###
Multiplying fractions

multiply straight across

###
dividing fractions

To divide fractions, invert the second one and multiply

###
How to find the percent increase/decrease

Percent Change= Difference/Original x 100

###
exponent rules

Adding an exponent to a fraction always results in a smaller number, a negative number raised to an even power becomes positive, but a negative number raised to an odd number remains negative

###
square root

a number which when multiplied by itself gives the original number

###
multiply and divide square roots

the same as any other number

###
adding and subtracting square roots

you can not add or subtract square roots unless the roots are the same.

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common square roots

1= 1

2= 1.4

3= 1.7

4= 2

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associative law

When you are adding or multiplying a series of numbers, you can regroup he numbers in any way you would like

###
distributive law

a(b+c)=ab+ac

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