Chapter 5 · Class 6 ICSE · Formula Sheet

Decimals Formulas — Class 6 ICSE

Work with decimal numbers including conversion between fractions and decimals.

Key Formulas

Equivalent Fractions

\dfrac{a}{b} = \dfrac{a \times k}{b \times k}

Addition (unlike)

\dfrac{a}{b} + \dfrac{c}{d} = \dfrac{ad + bc}{bd}

Subtraction

\dfrac{a}{b} - \dfrac{c}{d} = \dfrac{ad - bc}{bd}

Mixed to Improper

a\dfrac{b}{c} = \dfrac{ac + b}{c}

Comparison (Cross Multiply)

\dfrac{a}{b} \text{ vs } \dfrac{c}{d}: \text{ compare } ad \text{ and } bc

Worked Examples

1Using: Addition of Fractions

Add 2/5 + 3/10.

Step 1: LCM of 5 and 10 = 10.

Step 2: 2/5 = 4/10.

Step 3: 4/10 + 3/10 = 7/10.

Answer: 7/10

2Using: Mixed to Improper

Convert 3 1/4 to an improper fraction.

Step 1: = (3 x 4 + 1) / 4

Step 2: = 13/4.

Answer: 13/4

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More Class 6 ICSE Formulas

Number SystemHCF & LCMIntegersFractionsRatio & ProportionAlgebra Introduction

Frequently Asked Questions

How many formulas are in Class 6 ICSE Decimals?+
There are 5 formulas in the Decimals chapter for Class 6 ICSE. Each formula is essential for solving problems in this topic.
How to remember Decimals 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 Decimals formulas enough for exams?+
Yes, these formulas cover the complete ICSE Class 6 syllabus for Decimals. Practice applying them to different types of questions for full exam readiness.

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