Rational number

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Across
  1. 7. The value of number which is greater than or equal to zero
  2. 8. the number in which we gets the same quotient after dividing is called
  3. 9. The term for the law of multiplication over addition
Down
  1. 1. the opposite sign of a number
  2. 2. a+b=b+a
  3. 3. 0+1=1+0=1
  4. 4. the term in which the sum of three rational numbers remains same is called
  5. 5. the term in which the two rational number are having equal values
  6. 6. ___ has no reciprocals