Summary
◦ Look for ways to eliminate answer choices that are too big or too small. Ballparking can help you
find the right answer without extensive paper-and-pencil calculations when calculator use is not
allowed. Even when you can use your calculator, Ballparking can help you avoid trap answers and
improve your chances of getting the question right if you have to guess.
◦ When Ballparking answers on geometry questions, use a bit of caution. The figures are not always
drawn to scale. Use the given information to determine if you can trust your figure before using it to
eliminate answers.
◦ After you’ve set up the problem on the page, you should definitely use the calculator when allowed
to avoid careless mistakes from doing math in your head.
◦ Take your own calculator when you take the test. You don’t need a fancy one. Make sure your
calculator doesn’t beep or have a typewriter-style keyboard.
◦ Even if you already use a calculator regularly, you should still practice with it before the test.
◦ Be careful when you key in numbers on your calculator. Check each number on the display as you
key it in. Clear your work after you finish each problem or after each separate step.
◦ A calculator can’t help you find the answer to a question you don’t understand. (It’s only as smart as
you are!) Be sure to use your calculator as a tool, not a crutch.
◦ Set up the problem or equation on paper first. By doing so, you will eliminate the possibility of
getting lost or confused.
◦ Don’t use the memory function on your calculator (if it has one). Scratch paper works better.
◦ Whether you are using your calculator or paper and pencil, you must always perform calculations in
the proper order.
◦ If your calculator runs on batteries, make sure it has fresh ones at test time! Change them a week
before.
◦ Make sure your math skills are solid so you can tackle questions in the No Calculator section with
confidence.
