Across
- 2. marks around an operation that should be done first
- 4. an expression that is written using variables
- 7. the value of a variable that makes an equation true
- 9. a letter that stands for a number
Down
- 1. the specific order to do the four basic operations
- 3. an expression that is written using numbers
- 5. mathematical sentence that show quantities that are not equal
- 6. a mathematical sentence that uses an equal sign
- 8. to write a shorter or easier form of an expression