SAT Math Exam UPDATED ACTUAL
QUESTIONS AND CORRECT ANSWERS
Quadratic formula - CORRECT ANSWER [-b ± √(b² - 4ac)] / (2a)
Slope formula - CORRECT ANSWER (y₂- y₁) / (x₂- x₁)
Integers - CORRECT ANSWER ..., -3, -2, -1, 0, 1, 2, 3, ...
Rationals - CORRECT ANSWER fractions (anything expessable as a ratio of integers)
Reals - CORRECT ANSWER integers, rationals, plus special #s (like √2 or pi)
Order of opperations - CORRECT ANSWER PEMDAS (Parentheses / Exponents / Multiply /
Divide / Add / Subtract)
Arithmetic Sequences - CORRECT ANSWER t₁, t₁+ d, t₁+2d, ...
Geometric Sequences - CORRECT ANSWER t₁, t₁· r, t₁· r², ...
Factors - CORRECT ANSWER ex. Factors of 52 are 2, 4, 13, and 26
Multiples - CORRECT ANSWER ex. Multiples of 20 are 40, 60, 80, 100, ...
Percentages - CORRECT ANSWER part = (percent / 100) x whole
Average - CORRECT ANSWER average = sum of terms / number of terms
Average speed - CORRECT ANSWER average speed = total distance / total time
, Sum - CORRECT ANSWER sum = average x (number of terms)
Mode - CORRECT ANSWER mode = value in the list that appears most often
Median - CORRECT ANSWER median = middle value in the list
Fundamental counting principle - CORRECT ANSWER if 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 - CORRECT ANSWER probability = number of desired outcomes / number of
total outcomes
Adding exponents - CORRECT ANSWER x^a · x^b = x^(a+b)
Subtracting exponents - CORRECT ANSWER x^a / x^b = x^(a-b)
Negative exponents - CORRECT ANSWER 1 / x^b = x^(-b)
Multiplying exponents - CORRECT ANSWER (x^a)^b = x^(a·b)
X^0 - CORRECT ANSWER 1
Roots - CORRECT ANSWER √(xy) = √x · √y
FOIL - CORRECT ANSWER (x+a)(x+b) = x^2 + (b+a)x + ab
Difference of squares - CORRECT ANSWER a^2 -b^2 = (a+b)(a-b)
A^2 + 2ab + b^2 - CORRECT ANSWER (a+b)^2
QUESTIONS AND CORRECT ANSWERS
Quadratic formula - CORRECT ANSWER [-b ± √(b² - 4ac)] / (2a)
Slope formula - CORRECT ANSWER (y₂- y₁) / (x₂- x₁)
Integers - CORRECT ANSWER ..., -3, -2, -1, 0, 1, 2, 3, ...
Rationals - CORRECT ANSWER fractions (anything expessable as a ratio of integers)
Reals - CORRECT ANSWER integers, rationals, plus special #s (like √2 or pi)
Order of opperations - CORRECT ANSWER PEMDAS (Parentheses / Exponents / Multiply /
Divide / Add / Subtract)
Arithmetic Sequences - CORRECT ANSWER t₁, t₁+ d, t₁+2d, ...
Geometric Sequences - CORRECT ANSWER t₁, t₁· r, t₁· r², ...
Factors - CORRECT ANSWER ex. Factors of 52 are 2, 4, 13, and 26
Multiples - CORRECT ANSWER ex. Multiples of 20 are 40, 60, 80, 100, ...
Percentages - CORRECT ANSWER part = (percent / 100) x whole
Average - CORRECT ANSWER average = sum of terms / number of terms
Average speed - CORRECT ANSWER average speed = total distance / total time
, Sum - CORRECT ANSWER sum = average x (number of terms)
Mode - CORRECT ANSWER mode = value in the list that appears most often
Median - CORRECT ANSWER median = middle value in the list
Fundamental counting principle - CORRECT ANSWER if 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 - CORRECT ANSWER probability = number of desired outcomes / number of
total outcomes
Adding exponents - CORRECT ANSWER x^a · x^b = x^(a+b)
Subtracting exponents - CORRECT ANSWER x^a / x^b = x^(a-b)
Negative exponents - CORRECT ANSWER 1 / x^b = x^(-b)
Multiplying exponents - CORRECT ANSWER (x^a)^b = x^(a·b)
X^0 - CORRECT ANSWER 1
Roots - CORRECT ANSWER √(xy) = √x · √y
FOIL - CORRECT ANSWER (x+a)(x+b) = x^2 + (b+a)x + ab
Difference of squares - CORRECT ANSWER a^2 -b^2 = (a+b)(a-b)
A^2 + 2ab + b^2 - CORRECT ANSWER (a+b)^2
