## RS Aggarwal Class 8 Math First Chapter Rational Numbers Exercise 1C Solution

## EXERCISE 1C

**(1) Add the following rational numbers:**

**(2) Add the following rational numbers:**

**(3) Verify the following: **

**(4) Verify the following: **

**(5) Fill in the blanks:**

**(6) Find the additive inverse of each of the following:**

**(7) Subtract:**

**(8) Using the rearrangement property find the sum: **

**(9) The sum of two rational numbers is – 2. If one of the numbers is (-14)/5****find the other.**

Solution: Let the required number be x.

**(10) The sum of two rational numbers is (-1)/2. If one of the numbers is 5/6, find the other.**

Solution: Let the required number be x.

**(11) What number should be added to (-5)/8 so as to get (-3)/2?**

**(12) What number should be added to – 1 so as to get 5/7?**

**(13) What number should be subtracted from (-2)/3 to get (-1)/6?**

**(14) (i) Which rational number is its own additive inverse?**

Ans: 0.

**(ii) Is the difference of two rational numbers a rational number?**

Ans: Yes.

**(iii) Is addition commutative on rational numbers?**

Ans: Yes.

**(iv) Is addition associative on rational numbers?**

Ans: Yes.

**(v) Is subtraction commutative on rational numbers?**

Ans: No.

**(vi) Is subtraction associative on rational numbers?**

Ans: No.

**(vii) What is the negative of a negative rational number?**

Ans: The number itself.

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