# NCERT Solutions Class 7 Maths Chapter 13 Exponents and Powers

Exponents are a way to write very big numbers in a concise and readable manner. The NCERT Solutions for Class 7 maths Chapter 13 Exponents and Powers comprises the rules and laws framed around the exponents. Large numbers are often encountered in mathematics, science, and geography. It becomes not only difficult to read them, but also it is tricky to do calculations with them. Exponents and powers are there to simplify this process by making the numbers easier to read and operate. Thus, these NCERT solutions Class 7 maths Chapter 13 will teach the students how to write the long number in short form notation.

Hence, 100,000 can be written as 10^{5 }which means 10 x 10 x 10 x 10 x 10. So here, 10 is called the base, and 5 is called the exponent, and the mathematical way to read it is 10 raised to the power of five, or it can be said that 10^{5} is the exponential form of the number 100,000. These powers have been given specific names in mathematics, such as the power 2 is read as squared, so 10^{2} is 10 ‘square’ while 10^{3} or 10 raised to the power of three is read as 10 ‘cube’. The NCERT Class 7 maths solutions Chapter 13 Exponents and Powers are given below and also find some of these in the exercises given below.

- NCERT Solutions Class 7 Maths Chapter 13 Ex 13.1
- NCERT Solutions Class 7 Maths Chapter 13 Ex 13.2
- NCERT Solutions Class 7 Maths Chapter 13 Ex 13.3

## NCERT Solutions for Class 7 Maths Chapter 13 PDF

When a quantity is multiplied by itself a bunch of times, the exponent indicates how many times it has been multiplied. They're also known as 'power.' In mathematics, there are special rules for resolving problems using exponents, which can be learned from the NCERT solutions Class 7 maths Chapter 13 given below:

**ā** Download Class 7 Maths NCERT Solutions Chapter 13

**NCERT Class 7 Maths Chapter 13 **

### NCERT Solutions for Class 7 Maths Chapter 13 Exponents and Powers

Exponents are commonly used in algebraic expressions and can be multiplied in the same way that other numbers are multiplied. Exponents, which indicate repetitive multiplication, can easily be simplified using a few simple properties. The basic structure of an exponent's writing is x^{y}, where x represents the base and y represents the exponent. The students must make sure to learn all these facts, which are explained in detail in the NCERT Solutions Class 7 Maths Chapter 13 Exponents and Powers given below.

- Class 7 Maths Chapter 13 Ex 13.1 - 8 Questions
- Class 7 Maths Chapter 13 Ex 13.2 - 5 Questions
- Class 7 Maths Chapter 13 Ex 13.3 - 4 Questions

ā Download Class 7 Maths Chapter 13 NCERT Book

**Topics Covered:** The Class 7 maths NCERT solutions Chapter 13 takes a closer look at the laws related to exponents, how to do multiplication when the base is the same, how to manage taking out power of a power and how multiplication and division of powers with same exponents are done. Also, how to deal with numbers that have exponent as zero and how large numbers can be represented in the standard form is discussed herewith.

**Total Questions:** The class 7 maths chapter 13 Exponents and Powers consists of 17 questions of which 12 are easy, 3 are moderately difficult and 2 are long answer type questions.

## List of Formulas in NCERT Solutions Class 7 Maths Chapter 13

The NCERT solutions Class 7 maths Chapter 13 covers a lot of important concepts crucial for understanding the exponents. The main thing being how to deal when multiplication and division are encountered in the case of exponents. Thus, there are certain guidelines that need to be followed, like when numbers in the exponential form are multiplied their powers get added. Some of such important formulas covered in NCERT Solutions for Class 7 maths Chapter 13 are given below :

**Multiplication of Exponents : a**^{x}x a^{b}= a^{x+b}**Division of Exponents : a**^{x}/ a^{b}= a^{x-b}

## FAQs on NCERT Solutions Class 7 Maths Chapter 13

### Why are NCERT Solutions Class 7 Maths Chapter 13 Important?

The students will get to practice a variety of questions on exponents and powers in the NCERT Solutions Class 7 Maths Chapter 13, which will ensure that they cover different kinds of numbers. With the help of examples and exercise questions, the students will gain enough confidence to deal with any problem in the exams. Also, the NCERT team has thoughtfully curated the study material after much research, which is very helpful in learning the important concepts.

### What are the Important Formulas in NCERT Solutions Class 7 Maths Chapter 13?

The NCERT Solutions Class 7 Maths Chapter 13 deals with the law of exponents explaining some important rules. Some of which are: The multiplication of exponents results in the addition of their powers while the division of exponents results in the subtraction of their powers. Also, the power of power results in the multiplication of them. These are important pointers which the students will need while solving questions.

### Do I Need to Practice all Questions Provided in Class 7 Maths NCERT Solutions Exponents and Powers?

Each example and question in the NCERT Solutions Class 7 Maths Exponents and Powers will help the students in memorizing the concepts which they have read in the chapter. Hence, it is beneficial for the students to solve all of them in order to increase their understanding of the exponents and powers.

### How CBSE Students can utilize NCERT Solutions Class 7 Maths Chapter 13 effectively?

The students must make sure to move slowly throughout the chapter, only when they are clear of the concepts in one section then they should move ahead. An improper understanding of the previous concepts will result in confusion when approaching new concepts. Also to strengthen their learned knowledge they must ensure to practice all the solved examples too. In this way, they can utilize the NCERT Solutions Class 7 Maths Chapter 13 effectively.

### Why Should I Practice NCERT Solutions Class 7 Maths Exponents and Powers Chapter 13?

The NCERT Solutions Class 7 Maths Exponents and Powers Chapter 13 has been specially designed by the expert scholars at NCERT, making it an important resource of learning. They have made sure that the concepts have been explained in simple language and all the necessary topics are covered in a comprehensive manner. The CBSE board also highly recommends studying from the NCERT books hence making it an important resource for the students to practice.

### How Many Questions are there in Class 7 Maths NCERT Solutions Chapter 13 Exponents and Powers?

The Class 7 Maths Chapter 13 Exponents and Powers has 17 questions, which have various subparts as well. 12 of these are very easy as they require representation in exponential form, and 5 of them are a little towards the complex side because of the calculations involved in them.