Candidates can download NCERT Exemplar Class 9 Maths Unit 1 from this page. The exemplar has been provided by the National Council of Educational Research & Training (NCERT) and the candidates can check it from below for free of cost. It contains objective, very short answer type, short answer type, and long answer type questions. Along with it, the answer for each question has also been provided. From the NCERT Exemplar Class 9 Maths Unit 1, candidates can understand the level and type of questions that are asked in the exam.

**Click Here for Class 9 Maths Notes**

## NCERT Exemplar Class 9 Maths Unit 1 Number Systems

NCERT Class 9 Maths Unit 1 is for Number Systems. The type of questions that will be asked from NCERT Class 9 Maths Unit 1 are displayed in the below provided NCERT Exemplar Class 9 Maths Unit 1. With the help of it, candidates can prepare well for the examination.

**Also Check:** NCERT Solutions for Class 9 Maths

### Main Concepts and Results

Rational numbers

Irrational numbers

Locating irrational numbers on the number line

Real numbers and their decimal expansions

Representing real numbers on the number line

Operations on real numbers

Rationalisation of denominator

Laws of exponents for real numbers

- A number is called a rational number, if it can be written in the form p/q, where p and q are integers and q ≠ 0.
- A number which cannot be expressed in the form p/q (where p and q are integers and q ≠ 0) is called an irrational number.
- All rational numbers and all irrational numbers together make the collection of real numbers.
- Decimal expansion of a rational number is either terminating or non-terminating recurring, while the decimal expansion of an irrational number is non-terminating non-recurring.
- If r is a rational number and s is an irrational number, then r+s and r-s are irrationals.

Further, if r is a non-zero rational, then rs and r/s are irrationals. - For positive real numbers a and b :

- If p and q are rational numbers and a is a positive real number, then

### Multiple Choice Questions (Solved Examples)

### Multiple Choice Questions (Exercise)

### Short Answer Questions with Reasoning (Solved Examples)

### Short Answer Questions with Reasoning (Exercise)

### Short Answer Type Questions (Solved Examples)

### Short Answer Type Questions (Exercise)

### Long Answer Type Questions (Solved Examples)

### Long Answer Type Questions (Exercise)

**Click Here**to download NCERT Exemplar Class 9 Maths Unit 1 Number Systems.

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### Answers

### Multiple Choice Questions (Exercise)

### Short Answer Questions with Reasoning (Exercise)

### Short Answer Type Questions (Exercise)

### Long Answer Type Questions (Exercise)

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