CBSE Class 8 Maths Rational Numbers Quiz 3

1. The multiplicative identity for rational numbers is

A -1 B 1 C 0 D none of these.

2. The additive inverse of \(\frac{2}{3}\) is

A -\(\frac{2}{3}\) B \(\frac{3}{2}\) C -\(\frac{3}{2}\) D 1

3. The additive inverse of -\(\frac{3}{4}\) is

A -\(\frac{3}{4}\) B 1 C 0 D \(\frac{3}{4}\)

4. The multiplicative inverse of \(\frac{1}{2}\) is

A 1 B -1 C 2 D 0

5. The multiplicative inverse of -\(\frac{2}{5}\) is

A -\(\frac{2}{5}\) B -\(\frac{5}{2}\) C \(\frac{5}{2}\) D 1

6. The multiplicative inverse of 1 is

A 0 B -1 C 1 D none of these.

7. The multiplicative inverse of -1 is

A 0 B -1 C 1 D none of these.

8. How many rational numbers are there between any two given rational numbers?

A Only one B Only two C Countless D Nothing can be said.

9. The negative of 2 is

A 2 B \(\frac{1}{2}\) C -2 D -\(\frac{1}{2}\)

10. The negative of -2 is

A -2 B 2 C -\(\frac{1}{2}\) D \(\frac{1}{2}\)