Maharashtra board – Standard 8 – Subject Maths – chapter 1 – Rational Numbers & Irrational Numbers

The number of the form m/n are called rational numbers. Here m and n are integers but n is not zero.

There are many more numbers on a number line which are not rational numbers they are called irrational numbers.

√2 is such an irrational number

Practice Set 1.1

Q.1. Show the following numbers on a number line. Draw a separate number line for each.

Solution:

Q.2.Observe the number line and answer the questions.

1)Which number is indicated by point B?

Ans: Point B is marked on the 10th equal part on the left side of O. ∴ The number indicated by point B is 10 / 4 .

2)Which point indicates the number 1 3 / 4 ?

Ans:

Point C is marked on the 7th equal part on the right side of O. ∴ The number 1 3 / 4 is indicated by point C.

3)State whether the statement ,’the point D denotes the number 5 / 2 is true or false.

Ans: Point D is marked on the 10th equal part on the right side of O. ∴ D denotes the number 5 x 2 / 2 x 2 = 5 / 2

Prajwal