1. What kind of Math do you need to know for the AP Exam?

2. Some helpful hints:  Use exponents whenever numbers are especially large or small. They are easier to work with.  Remember you will not be permitted to use a calculator on the AP exam!!

3. Remember this:  When multiplying numbers with the same base, you ADD the exponents.  For ex: 2 2 x 2 3 = 2 5  When dividing numbers with the same base, you SUBTRACT the exponents.  For ex: 2 6 ÷ 2 3 = 2 3  Anything to the power zero is just "1".

4. Use the dimensional analysis or factor/label method 1) How many centimeters are in 6.00 inches? (2) Express 24.0 cm in inches.

5. Be sure to know how to convert numbers to % and to calculate percent change For ex: Five out of these sixteen otters are female. What total percent are female? 5/16 x 100 = 31.35%

6. How to calculate % change  % Change = value at end of period minus value at beginning of period divided by value at beginning x 100 OR  % change = V present – V past x 100 V past To further calculate an annual percentage rate of change, divide the % change by the number of years between the two values (past & present)

7. Keep it simple!  Practice reducing numbers to their lowest terms!  Remember that the numbers will be likely to be simple to manipulate.

8. Show ALL of your work  Include all steps to calculations, even if they are so simple  Label all answers with units!  NO NAKED NUMBERS!

9. Know some basic metric prefixes for simple calculations  A simple way to remember:  Many= mega  Kids= kilo  Have = hecta  Dropped = deca  Dead= deci  Converting= centi  Metric = milli  Units= micro ( µ )

10. MegaKiloHectaDecaBasicUnitMLGDeciCentiMilliMicro 1,000,0001,00010010.1.01.001.000001

11. Think Smart and be a good test taker!  If you know math is your weak area, save the calculation parts until the end. Do EVERYTHING else and then go back to the math parts at the end.