Word Phrase |
Expression |
Comment |
three times a number |
3 x |
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 - 3 x |
|
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 |
5 x + 8 |
"more than" means add |
6 less than 3 times a number |
3 x - 6 |
"less than" means subtract from what follows the "less than" |