## Ex 1.1 Class 8 ML Aggarwal

Question 1.

Add the following:

Solution:

Question 2.

Simplify:

Solution:

Question 3.

Verify commutative property of addition for the following pairs of rational numbers:

Solution:

Question 4.

Find the additive inverse of the following rational numbers:

(i) \(\frac { 2 }{ -3 }\)

(ii) \(\frac { -7 }{ -12 }\)

Solution:

Additive inverse of:

Question 5.

Verify that -(-x) = x for

(i) x = \(\frac { 10 }{ 13 }\)

(ii) x = \(\frac { -15 }{ 17 }\)

Solution:

Question 6.

Using appropriate properties of addition, find the following:

Solution:

Question 7.

Fill in the following blanks:

Solution:

Question 8.

If a = \(\frac { -11 }{ 27 }\), b = \(\frac { 4 }{ 9 }\) and c = \(\frac { -5 }{ 18 }\), then verify that a + (b + c) = (a + b) + c.

Solution: