Across
- 4. a+b=b+a
- 6. ____had no reciprocals
- 8. The value of number which is greater than or equal to zero
- 9. property which does not hold true for division
Down
- 1. negative of a rational number
- 2. of 1 is 1
- 3. of a negative no and additive no is zero
- 5. 0+1=1+0=1
- 7. repeated addition