Percentage

JCERT · Class 7 · Chapter 8 · Percentage. Topic notes aligned to the official chapter; these are not solutions to every textbook exercise.

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Why This Chapter Matters

JCERT · Class 7 · Chapter 8 · Percentage. Topic notes aligned to the official chapter; these are not solutions to every textbook exercise.

Before You Begin (Prerequisites)

Revise relevant arithmetic and ideas from the previous grade.

What You Will Learn (Core Objectives)

Percent means per hundred. Multiply a fraction by 100 to express it as a percentage. Measure percentage increase or decrease relative to the specified original amount.

Chapter Roadmap & Progression

1 Syllabus, textbook and notes alignm...

2 Concept and method

3 Check and common pitfall

Complete Concept Guide (100% Curriculum Coverage)

Syllabus, textbook and notes alignment

JCERT · Regular schools (Non-SOE) · Class 7 · Chapter 8 — Percentage
Official syllabus pages 115–128. Official syllabus · Prescribed Hindi book (22 chapters) · Separate supplementary reference.

These topic notes and teaching examples are not a complete answer key to every textbook question. English notes use this same JCERT chapter order; a matching English textbook PDF has not been verified.

Official Hindi PDF for this exact chapter

Concept and method

Percent means per hundred. Multiply a fraction by 100 to express it as a percentage. Measure percentage increase or decrease relative to the specified original amount.

Check and common pitfall

Use the original price ₹8 as the base, not the new price ₹12.

Key Formulas, Identities & Theorems

Key relationships

प्रतिशत / percentage = (part ÷ whole) × 100; change % = (change ÷ original) × 100

Observe the stated conditions and units.

Conceptual Solved Examples & Case Studies

Example 1

A price rises from ₹8 to ₹12. Find the percentage increase.

Step-by-Step Solution:

12 − 8 = 4; (4/8) × 100 = 50%

Use the original price ₹8 as the base, not the new price ₹12.

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