Mathematics. Topic : Rational Numbers. Questions are taken from the Selina Textbook

 

Subject: Mathematics                                        Board: ICSE                                                                      Grade: 8

Topic: Rational numbers

Q1. Add the following                                                                               (9)

Q2.  Evaluate

Q3. Write the additive inverse of:

Q4. Evaluate

Q5. Subtract

Q6. The sum of two rational numbers is 9/20. If one of them is 2/5, find the other.

Q7. Which rational number should be added to −7/8 to get 5/9?

Q8. Evaluate:

Q9. Write the multiplicative inverse of each rational number, given below :

Q10. Evaluate

Q11. The product of two rational numbers is -2. If one of them is 4/7, find the other.

Q12. If 3 and 1/2 litres of milk costs ₹49, find the cost of one litre of milk?
Q13.