click below

click below

Normal Size Small Size show me how

# 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. |