Across
- 6. 1st culture to use negative numbers
- 7. (a*b) + c = (a*b) + (a*c) Guess the property
- 8. Multiplication of odd number of negative numbers
Down
- 1. a + b = c ; b + a = c Guess the property
- 2. Century when negative numbers were excepted into the number line
- 3. a + (b + c) = (a + b) + c = (a + c) + b Guess the property
- 4. abbreviation of Z which is the symbol of integers
- 5. multiplication of 2 negative integers
- 9. Sum of 2 odd numbers