Pre Algebra Periods 1, 2, & 4

Fractions = Decimals=Percents 6 -5
% literally means "out of 100" and
the symbol comes from the fraction bar and a denominator of 100

**TO CHANGE ANY % TO A FRACTION:
Simply get rid of the % sign and put the number over a denominator of 100. Simplify (reduce).
EX: 5% = 5/100 = 1/20

**TO CHANGE ANY % TO A DECIMAL:
Simply get rid of the % and move the decimal point over to the LEFT 2 PLACES (run AWAY from the %)
EX: 5% = .05

**TO CHANGE ANY DECIMAL TO A %
Simply put the % to the right of the number and move the decimal point to the RIGHT 2 PLACES (run towards the %)
EX: .245 = 24.5%

**TO CHANGE ANY FRACTION TO A %
Simply change it to a decimal first, then to a % as above
EX: 20/50 = .4 = 40%
or
If the denominator will go into 100 easily, you can use equivalent fractions
EX: 20/50 The denominator goes into 100 easily, so just multiply by 2 and get 40/100 = 40%

If you ever forget how many places to move the decimal,
just look at the % sign - It tells you 2 places (2 zeros!)