SAT Math Terms & Formulas
quadratic formula - answer[-b ± √(b² - 4ac)] / (2a)
slope formula - answer(y₂- y₁) / (x₂- x₁)
integers - answer..., -3, -2, -1, 0, 1, 2, 3, ...
rationals - answer fractions (anything expessable as a ratio of integers)
reals - answerintegers, rationals, plus special #s (like √2 or pi)
order of opperations - answerPEMDAS (Parentheses / Exponents / Multiply / Divide /
Add / Subtract)
Arithmetic Sequences - answert₁, t₁+ d, t₁+2d, ...
Geometric Sequences - answert₁, t₁· r, t₁· r², ...
Factors - answerex. factors of 52 are 2, 4, 13, and 26
Multiples - answerex. multiples of 20 are 40, 60, 80, 100, ...
percentages - answerpart = (percent / 100) x whole
average - answeraverage = sum of terms / number of terms
average speed - answeraverage speed = total distance / total time
sum - answersum = average x (number of terms)
mode - answermode = value in the list that appears most often
median - answermedian = middle value in the list
fundamental counting principle - answerif an event can happen in N ways, and another,
independent event can happen in M ways, then both events together can happen in N x
M ways.
probability - answerprobability = number of desired outcomes / number of total
outcomes
quadratic formula - answer[-b ± √(b² - 4ac)] / (2a)
slope formula - answer(y₂- y₁) / (x₂- x₁)
integers - answer..., -3, -2, -1, 0, 1, 2, 3, ...
rationals - answer fractions (anything expessable as a ratio of integers)
reals - answerintegers, rationals, plus special #s (like √2 or pi)
order of opperations - answerPEMDAS (Parentheses / Exponents / Multiply / Divide /
Add / Subtract)
Arithmetic Sequences - answert₁, t₁+ d, t₁+2d, ...
Geometric Sequences - answert₁, t₁· r, t₁· r², ...
Factors - answerex. factors of 52 are 2, 4, 13, and 26
Multiples - answerex. multiples of 20 are 40, 60, 80, 100, ...
percentages - answerpart = (percent / 100) x whole
average - answeraverage = sum of terms / number of terms
average speed - answeraverage speed = total distance / total time
sum - answersum = average x (number of terms)
mode - answermode = value in the list that appears most often
median - answermedian = middle value in the list
fundamental counting principle - answerif an event can happen in N ways, and another,
independent event can happen in M ways, then both events together can happen in N x
M ways.
probability - answerprobability = number of desired outcomes / number of total
outcomes
