Chapter 3 · Class 7 ICSE · Formula Sheet

Rational Numbers Formulas — Class 7 ICSE

Explore the set of rational numbers, their properties, and representation on the number line.

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: Place Value

Find the place value of 6 in 3,65,421.

Step 1: 6 is in the ten-thousands place.

Step 2: Place value = 6 x 10,000 = 60,000.

Answer: 60,000

2Using: Successor

Find the successor of 9,999.

Step 1: Successor = n + 1

Step 2: = 9,999 + 1 = 10,000.

Answer: 10,000

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More Class 7 ICSE Formulas

IntegersFractions & DecimalsExponentsAlgebraic ExpressionsLinear EquationsRatio & Proportion

Frequently Asked Questions

How many formulas are in Class 7 ICSE Rational Numbers?+
There are 3 formulas in the Rational Numbers chapter for Class 7 ICSE. Each formula is essential for solving problems in this topic.
How to remember Rational Numbers 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 Rational Numbers formulas enough for exams?+
Yes, these formulas cover the complete ICSE Class 7 syllabus for Rational Numbers. Practice applying them to different types of questions for full exam readiness.

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