Word Phrase |
Expression |
Comment |
---|

three times a number |
3x |
A number next to a variable means multiply |

half of a number |
x/2 |
"half of", "third of", "one fifth of" all mean multiply by fractions,
or divide by the denominator |

one minus 3 times a number |
1 - 3x |
| |

one *less than* 3 times a number |
3x - 1 |
Tricky! "less than" means subtract from what follows the "less
than" |

a number *increased* by 5 |
x + 5 |
The word "increase" means add |

a number *decreased* by 8 |
x - 8 |
The word "decrease" means subtract |

8 *more than* 5 times a number |
5x + 8 |
"more than" means add |

6 *less than* 3 times a number |
3x - 6 |
"less than" means subtract from what follows the "less than" |