Home > Pre-algebra > Variable Expressions > Write Variable Expressions

## Examples

Write the expression
A number increased by 7
Figure out the operation that is being referred to
Because we see the phrase increased by, we know this expression will use Addition
Let x = the unknown number
When we put this together, we end up with
Write the expression
3 plus a number
Figure out the operation that is being referred to
Because we see the word plus, we know this expression will use Addition
Let x = the unknown number
When we put this together, we end up with
Write the expression
The sum of a number and 4
Figure out the operation that is being referred to
Because we see the word sum, we know this expression will use Addition
Let x = the unknown number
When we put this together, we end up with
Write the expression
A number increased by 5
Figure out the operation that is being referred to
Because we see the phrase increased by, we know this expression will use Addition
Let x = the unknown number
When we put this together, we end up with