Across
- 4. substitute a number for each variable and calculate
- 5. collection of all solutions
- 6. replacing the variable with a number value
- 7. expressions when you sub in a value in two expressions and it always gives the same result
- 8. when we substitute any value for their variables
- 9. 0,1,2,3...
- 10. contains at least one variable
Down
- 1. change the order when adding without affecting the sum. For multiplication we can change the order without affecting the product
- 2. are called grouping symbols. They should be done first
- 3. 1,2,3...