Across
- 4. A letter used to represent numbers.
- 5. A number expressing the quantity of a variable.
Down
- 1. Any combination of letters, numbers and terms.
- 2. Shows equal expressions; to be solved.
- 3. Separate parts of expressions, equations, formulae and identities.
- 6. Shows equal expressions; to be evaluated.
- 7. An equation true for all values.