Across
- 7. (a + b) + c = a + (b + c)
- 10. Natural numbers ( counting numbers) and zero; 0, 1, 2, 3...
- 11. Amount of space occupied by an object
- 12. (ab)c=a(bc)
- 13. a relation in which each element of the domain is paired with exactly one element of the range
Down
- 1. a+b=b+a
- 2. ab=ba
- 3. a(b+c)=ab+ac
- 4. a+0=0+a=a
- 5. a mathematical statement that two expressions are equal
- 6. Is the multiplicative inverse of the number. i.e. the reciprocal of 1/2 is 2.
- 8. a letter or symbol used to represent a number
- 9. a number and its opposite