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# ch.4 fact,fract,expo

Question | Answer |
---|---|

what are the rules of divisibility for 2,3,4,5,6,8,9,10 | 2:if it ends in an even number 3:if the sum of the digits is divisible by 3 4: if the last two numbers are divisible by 4 5: if it ends in 5 or 0 6: if its divisible by 2 and 3 8:if the last 3 digits are divisible by 8 9:same as 3 10: ends in 0 |

what is a factor | any number that can be divided evenly into another number |

what is the order of operations | parenthatseees exponents multiply divide add subtract |

what is an exponet | a method of writing repetitive multiplication. how many times to multiply a number by itself. |

-3^2 means... | -3 to the 2nd power |

what is a prime number | a number that can only be divided by 1 and itself |

what is a composite number | a number that can be divided by more than 1 and itself |

what is the GFC | the greatest number divisible that divides into another number |

what is a variable GFC | ex : x^2 |

what is prime factorizaton | the break down of composite numbers into smaller numbers |

how do you find prime factorization using the GFC | prime trees |

what is the difference between -3^2 and (-3)^2 | -3^2 = -6 (-3)^2 = 6 |

what is the base | the base is the number you are multiplying by |

what is the power | the power is the number of times you are multiplying the base |

anything to the power of 0 is ... | 1 |

anything to the power of 1 is ... | itself |

rational number | any number that can be written in the form of a/b where b is not 0 |

how to write negative rational numbers | the bottom number can not be negative |

power to the power rule | multiply the power |

the zero exponent rule | any exponent that is zero the answer is 1 |

the negative exponent rule | find the reciprocal |

example of writing without zero or negative exponents | bring the negatives to the opposite side of the fraction bar and make them positive and the zeros become ones and are not in the final answer |

example of writing without a fraction bar | bring the numbers from the bottom to the top and rewrite them as their reciprocal |

Emily Berg | Period 3 |

Created by:
bergemily