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## Write Variable Expressions

#### Introduction

#### Terms

## 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