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Rational Numbers

    What Have We Discussed?

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8th class > Rational Numbers > What Have We Discussed?

What Have We Discussed?

  1. Rational numbers are under the operations of addition, subtraction and multiplication.

2. The operations addition and multiplication are

(i) commutative for rational numbers.

(ii) associative for rational numbers.

3. The rational number 0 is the identity for rational numbers.

4. The rational number 1 is the identity for rational numbers.

5. Distributivity of rational numbers: For all rational numbers a, b and c, a(b + c) = + and a(b – c) = –

6. Between any two given rational numbers there are rational numbers. The idea of mean helps us to find rational numbers between two rational numbers.