Chapter 7 · Class 7 ICSE · Formula Sheet

Ratio & Proportion Formulas — Class 7 ICSE

Apply ratio and proportion concepts to solve real-world problems including direct and inverse variation.

Key Formulas

Definition

\dfrac{p}{q}, \quad q \neq 0, \quad p,q \in \mathbb{Z}

Standard Form

q > 0 \text{ and } \gcd(|p|,q) = 1

Between Two Rationals

\dfrac{1}{2}\left(\dfrac{a}{b} + \dfrac{c}{d}\right)

Worked Examples

1Using: Application

Apply the key formula from this topic to a sample problem.

Step 1: Identify the formula.

Step 2: Substitute the values.

Step 3: Simplify to get the answer.

Answer: See solution above

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More Class 7 ICSE Formulas

IntegersFractions & DecimalsRational NumbersExponentsAlgebraic ExpressionsLinear Equations

Frequently Asked Questions

How many formulas are in Class 7 ICSE Ratio & Proportion?+
There are 3 formulas in the Ratio & Proportion chapter for Class 7 ICSE. Each formula is essential for solving problems in this topic.
How to remember Ratio & Proportion formulas easily?+
Practice regularly with worked examples, group related formulas together, and use SparkEd's interactive practice mode to reinforce your memory through problem-solving.
Are these Ratio & Proportion formulas enough for exams?+
Yes, these formulas cover the complete ICSE Class 7 syllabus for Ratio & Proportion. Practice applying them to different types of questions for full exam readiness.

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SparkEd Maths provides free formula sheets for Class 1-10 across 7 education boards. All formulas are aligned to the 2025-26 syllabus.