CBSE Class 7 Maths Revision Notes Chapter 2

CBSE Class 7 Mathematics Revision Notes Chapter 2 – Fractions and Decimals

The Class 7 Mathematics Chapter 2 Notes are designed for students that are preparing for the final examinations. All the study materials, such as revision notes, important topics, and questions, are designed by experts for the students so that they can understand the topics properly. In addition to the Class 7 Chapter, 2 Mathematics Notes candidates can also access the past year papers, sample papers and important topics from Extramarks that can help them in understanding the types of questions asked in the examination.

Types of Fraction

In Class 7 Mathematics Chapter 2 Notes, six types of fractions are discussed. So let us discover them in detail.

• Proper fraction:

In this type of fraction, the value of the numerator is always less than the denominator. It shows the fraction value as a whole.

• Improper fraction:

In an improper fraction, the numerator is always greater than the denominator and shows a combination of proper and  whole fraction.

• Mixed fraction:

It is a mixture of whole numbers and fractions.

• Like fraction:

In a like fraction, the value has the same denominators.

• Unlike fractions:

In this type of fraction, they have different values for the denominator.

• Equivalent fraction:

These types of fractions are proportional to each other, which is why they are called equivalent fractions.

Decimals

Values that are used to represent numbers that are smaller than unit 1 are known as decimals. It is also known as the base 10 system, as a power of 10 is written in each place. When a decimal number is multiplied by a whole number, we acquire the same number of digits after the decimal point.

For example: 22.2 X 4 = 88.8

If we multiply a decimal number with a power of 10 then the decimal point will shift to the right by the number of zeros in its power.

For example: 22.22 X 100 = 2222

If a decimal divides a decimal number, then one will get the decimal points in the answer at the same places as the total number of places right to decimal positions in both numbers.

Example: 22.22 X 2.2 = 48.884

Importance of Extramarks Revision Notes While Preparing for Any Exam

The Class 7 Chapter 2 Mathematics Notes will help the students in preparing for final examinations. Extramarks recommends that students refer to the CBSE revision notes to understand the basic and advanced concepts of Chapter 2. In addition, candidates can rely on the Chapter 2 Mathematics Class 7 Notes as they are prepared according to the CBSE guidelines and NCERT books. The experts use easy language to prepare the revision notes so that students can get a better understanding of the topic.

The most important topics covered in Class 7 Mathematics Notes Chapter 2 are given below.

• Division of decimals
• Multiplication of decimals
• An introduction to decimals
• Types of fractions
• Reciprocal of a fraction
• Division of fractions
• Fraction and an operator ‘of’
• Multiplication of fractions
• Fractions on the number line
• Representation of fractions
• Meaning of fractions

From the Class 7 Chapter 2 Mathematics Notes, students will be able to cover all the important topics without any hassle. The platform of Extramarks provides the students with revision notes and important questions for every chapter so they can prepare for their final examinations. Candidates can access the study materials such as a detailed CBSE syllabus, CBSE previous year question papers, CBSE sample papers, and CBSE extra questions, including many more which are beneficial for the final examination.

1. How can one multiply the decimal numbers by 10,100 and 1000?

One can easily multiply a decimal digit by 10, transferring the decimal point to the right in one place. The same method is followed for the 100 or 1000 as well.

For example:

5.754 X 1000 = 5755

3.78 X 100 = 378

9.88 X 10 = 988

2. How can one divide the decimal numbers by 10,100 and 1000?

One can divide a decimal number by 10 by transferring the decimal point to the left side in one place. The same procedure can be followed for 1000 and 100.

For example:

267.33 divided by 1000 gives 0.26733.

5.25 divided by 10 gives 0.525 as the answer.

22.77 divided by 100 gives 0.2277 as an answer.