A | B |

answer to a multiplication problem | product |

answer to an addition problem | sum |

answer to a subtraction problem | difference |

answer to a division problem | quotient |

{1,2,3,4,5...} | natural numbers |

{0,1,2,3,4...} | whole numbers |

a symbol (generally a letter of the alphabet) that is used to represent an unknown number | variable |

a + 0 = a | additive identity |

(a + b) + c = a + (b + c) | associative property of addition |

a + b = b + a | commutative property of addition |

numbers being multiplied | factors |

a * b = b * a | commutative property of multiplication |

(a * b) * c = a * (b * c) | associative property of multiplication |

a * 1 = a | multiplicative identity |

a * 0 = 0 | zero factor law |

a(b + c) = a*b + a*c | distributive property of multiplication over addition |

the number being divided | dividend |

the number dividing into teh dividend | divisor |

a / 0 | is undefined, can't be done |

numbers added | addend |