Across
- 3. An operation that undoes another operation
- 7. A rule that assigns one output to each input
- 11. To make an expression easier to understand or shorter
- 12. To remove brackets by multiplying terms
- 13. A mathematical statement showing that two expressions are equal
- 14. A single part of an expression separated by + or −
- 15. To find the value of the variable that makes an equation true
Down
- 1. A value that needs to be found, often shown with a letter
- 2. A combination of numbers, letters, and operations
- 4. To replace a variable with a number
- 5. The number in front of a variable
- 6. To write an expression as a product of factors
- 8. A value that does not change
- 9. A letter that represents an unknown value
- 10. A branch of mathematics that uses letters and symbols to represent numbers