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Percentage

Percentage

JNVST Class 9 Mathematics, Chapter 6: Percentage

Have you seen a sale with 20% off on products? Or wondered how many marks you scored on a test? These are mere examples of percentages in daily life. Percentage is an easy way to compare numbers, which makes it an important topic in Navodaya Class 9 Mathematics exams.

JNVST Class 9 Mathematics Percentage teaches students how to find percentages, convert fractions into percentages, and solve percentage-based problems. Moreover, this topic helps students solve many questions with better speed and accuracy. 

Therefore, students should understand the basic rules and practise different types of questions. With regular practice, JNVST Class 9 Mathematics Percentage can become an easy and scoring topic. Hereby, Veda Academy provides the best online classes for Navodaya Class 9 with easy-to-understand study material, such as the JNV Mock Tests, Notes, Model papers, and PYQs

What is Percentage?

Percentage means a number out of 100. The word “percent” means "per hundred," derived from the Latin word "per centum." Percentage is denoted by %. Below, we have mentioned a few examples of percentages that are as follows:


  1. 25% means 25 out of 100.

  2. 50% means 50 out of 100.

  3. 75% means 75 out of 100.

  4. 100% means the whole amount


The basic formula for finding a percentage is Percentage = (Part ÷ Whole) × 100 = % 


An example of a percentage is as follows: A student scored 35 marks out of 50.

= 35 ÷ 50 × 100 = 70%. Thus, the student's percentage is 70%.


Also Read: Navodaya Class 9 Admission Form 2027 Step-by-Step Process

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Why Is Percentage Important for JNVST Class 9?

Percentage is an important part of Navodaya Class 9 Mathematics. Students may need to solve questions based on marks, prices, discounts, profit, loss, and comparisons. Moreover, percentage questions test basic calculation skills. Therefore, students should learn the formulas and practise regularly.


During JNVST Class 9 Mathematics Percentage exam preparation, students need to focus on these.


  1. All the basic formulas 

  2. Converting fractions into percentages

  3. Finding a percentage of a number

  4. Finding the original number

  5. Increase and decrease in percentage

  6. Word problems based on percentages

  7. Navodaya Class 9 important questions

Also Check: JNV Class 9 Admission Form 2027 Out or Not Check Latest Update

Important JNVST Class 9 Mathematics Percentage Exam Formulas

Applying the correct formula is important to solve any problem. Below is the list of formulas that are important for the Navodaya Class 9 Mathematics exam:


Basic Percentage Definition

Percentage = (Part ÷ Whole) × 100 

Finding the Part

Part = (Percentage × Whole) ÷ 100

Increase by a% and then decrease by b%:

Net Percentage Change = a - b - (ab / 100) %

Decrease by a% and then increase by b%

Net Percentage Change = - a + b - (ab / 100) % 

Decrease by a% and then decrease by b% 

Net Percentage Change = - a - b + (ab / 100) % 

Increase by a% and then increase by b% 

Net Percentage Increase = a + b + (ab / 100) % 

Cost Increased by A% – Required Decrease in Consumption 

Required Percentage Decrease in Consumption = [A / (100 + A)] × 100% 

Cost Decreased by A% – Required Increase in Consumption 

Required Percentage Increase in Consumption = [A / (100 - A)] × 100% 

Population/Cost Increasing Annually 

If the present population/cost is P and the annual increase rate is r%:

Population/Cost after t years = P × (1 + r/100)^t 

Population/Cost Before t Years – Increasing Rate 

Population/Cost before t years = P / (1 + r/100)^t 

Population/Cost Decreasing Annually 

If the present population/cost is P and the annual decrease rate is r%:

Population/Cost after t years = P × (1 - r/100)^t 

Population/Cost Before t Years – Decreasing Rate 

Population/Cost before t years = P / (1 - r/100)^t 


Also Check: Top Coaching for Navodaya Vidyalaya  Class 9 Entrance Exam Preparation

Tips to Prepare for JNVST Class 9 Mathematics Percentage

Math has always been a tough subject for various students, so here are some tips for them to prepare for the JNVST Class 9 Mathematics Percentage exam.


  1. Learn the Basics: First, understand what percentage means, then learn all the formulas.

  2. Practise regularly: Try solving a few questions daily; it will develop a habit of solving, and eventually it will improve speed and problem-solving skills.  

  3. Focus on Word Problems: Percentage questions can appear in different forms. Therefore, practise questions based on marks, money, discounts, and comparisons.

  4. Revise Mistakes: Keep a note of all the difficult questions and later, revise and solve them all.

  5. Practise Important Questions: Solve Navodaya Class 9 important questions to understand common question patterns.

  6. Take Mock Tests: Finally, take timed tests. This helps you improve both speed and accuracy.

Prepare with Veda Academy, the Best Coaching for Navodaya Vidyalaya  Class 9

Preparing for JNVST Class 9 exams is easier when students have the right learning support. Veda Academy offers the best JNV online classes to support students preparing for the Navodaya Class 9 entrance exam.

The platform provides structured lessons, practice questions such as Navodaya Class 9 important questions, revision support, and study materials prepared according to the JNV Syllabus. In addition, students can learn important concepts step by step. Veda Academy focuses on simple explanations so that students can understand topics such as JNVST Class 9 Mathematics Percentage without confusion.

Students looking for the best online classes for Navodaya Class 9 can use Veda Academy for regular learning and practice. Its best coaching for Navodaya Vidyalaya  Class 9 approach helps learners study from home and prepare with a clear study plan.

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