Question

all the example questions from chapter 1, class 8, subject-maths, CBSE​

Answer 1

Answer:

What are the multiplicative and additive identities of rational numbers?

Solution: 0 and 1 are the additive and multiplicative identity of rational numbers respectively.

2. Write the additive inverse of 19/-6 and -⅔

Solution: 19/-6 = 19/6 and -⅔ = 2/3

3. Write the multiplicative inverse of -13/19 and -7

Solution: -13/19 = -19/13 and -7 = -1/7

4. Mention a rational number which has no reciprocal.

Solution: A rational number “0” has no reciprocal or multiplicative inverse.

5. Mention any 4 rational numbers which are less than 5.

Solution: -1, 1, 2 and 3.