Across
- 4. set of elements that are in both A and B
- 7. the answer to an addition problem
- 10. any (positive) integer larger than 1; not prime
- 11. set of all the elements that are in either A or B
- 14. to multiply reciprocals and get 1
- 16. value the distance from 0 on a number line
- 17. isolating the variable to one side of the equation; has an invisible (positive) one in front of it
- 18. to add opposites
- 19. the answer to a division problem
Down
- 1. the answer to a subtraction problem
- 2. when you multiply by negative one the signs change
- 3. multiplication distributes over addition
- 5. any (positive) integer larger than 1; its only factors are itself and 1
- 6. any number the tis a coordinate of a point on the real number line
- 7. change around the sides of equal signs in an equation
- 8. answer; value that makes the statement true
- 9. any two real numbers the same distance from 0, but in opposite directions (different sides) of 0 on a number line
- 12. expression combination of numbers, variable, and operation symbols
- 13. the answer to a multiplication problem
- 15. a letter that represents a number; the unknown