Across
- 2. the distance from zero a number is on a number line
- 5. a+(b+c) = (a+b) + c
- 8. A number only evenly divisible by 1 and itself
- 10. A number or symbol that represents an unknown quantity
- 12. a + (-a) = 0
- 14. a(1) = a
- 15. Any number that is not a prime number
Down
- 1. a+b = b+a
- 3. a(bc) = (ab)c
- 4. a(b) = b(a)
- 6. a(1/a) = a
- 7. a+0 = a
- 9. A whole number that is positive, negative, or zero
- 11. The number beside a variable in an equation
- 13. a(b+c) = ab + ac