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SAT Prep
SAT Math Definitions
| Question | Answer |
|---|---|
| What’s the difference between rational and irrational numbers? | Rational numbers are numbers that can be expressed as a ratio of two integers. They can be in fraction, decimal or whole number form. Irrational numbers are numbers that cannot be expressed as a ratio of two integers. |
| What are vertical angles? | When two lines intersect, four angles are formed. Each opposite pair are called vertical angles and are always congruent. |
| When do you switch sign direction when solving an inequality? | When multiplying or dividing by a negative number. |
| How do you compute the sum of the number of degrees in the interior of any polygon? | Take the number of sides minus two times one hundred and eighty degrees. |
| What is the relationship between the slopes of parallel lines? | They are the same. |
| How are the slopes of perpendicular lines related? | They are opposite reciprocals of one another. |
| What is the domain and range of a function? | The domain includes all of the x values of the function and the range includes all of the y values of the function. |
| What is an integer? | An integer is a number that can be written without a fractional component. |
| What is a prime number? | A prime number can be divided evenly only by one and itself, and it must be a whole number greater than one. |
| What is a remainder? | When an integer is divided by another, the remainder is the integer amount that is left over. |
| What are even integers? | Even integers are numbers that can be divided by two without a remainder. |
| What are odd integers? | Odd integers cannot be divided by two without a remainder. |
| What is a multiple? | A multiple of a number is the result of multiplying that number by any integer. |
| What is a factor? | A factor of a number is any integer that can divide that number without a remainder. |
| What is arithmetic mean? | The arithmetic mean is the average of a group of numbers. It is the sum of the numbers divided by the number of numbers. |
| What does median mean? | The median of a group of numbers is the number in the middle of the group after the group has been numerically sorted. |
| What does mode mean? | The mode of a group of numbers is the number or numbers which appear most often (there can be more than one mode for a given group). |
| You are often asked on the SAT to solve for some variable “in terms of” another variable or variables. What does that mean? | It means, if you are asked to solve for a in terms of b and c, then simply solve for a with all other variables and numbers on the other side of the equation. |
| What does less or fewer mean? | When you see “less” or “fewer”, you should think subtraction. |
| What are real numbers? | Real numbers are all the numbers on the number line. |
| What is a positive number? | Positive numbers are numbers greater than zero. |
| What are negative numbers? | Negative numbers are any numbers less than zero. |
| What number is neither positive or negative? | Zero |
| What is a numerator? | A numerator is the top number of a fraction. |
| What is a denominator? | A denominator is the bottom number of a fraction. |
| What does quotient mean? | A quotient is the result of division. |
| What does consecutive mean? | Consecutive means following one another in uninterrupted succession. |
| What does distinct mean? | Different or unique |
| What does absolute value mean? | It means the distance from zero on a number line. |
| What is probability? | Probability is the measure of the likeliness that an event will occur. Probability is expressed as a number between zero and one. |
Created by:
apb159
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