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Revision Notes

Decimal Fractions — Revision Notes

ICSE · Class 6 · Mathematics

Decimal Fractions revision notes for ICSE Class 6 Mathematics: 4 topics in quick points. Part of the ICSE Class 6 Mathematics syllabus.

117 questions30 flashcards4 formulas & key relations5 concepts

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Key Topics to Revise

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1. Understanding Decimal Fractions

  • A decimal fraction is a fraction whose denominator is 10 or a power of 10 (like 100, 1000, etc.).
  • Instead of writing the denominator, we use a decimal point to show the value.
  • For example: $\frac{7}{10} = 0.7$, $\frac{25}{100} = 0.25$
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2. Like and Unlike Decimal Numbers

  • Like decimals have the same number of decimal places.
  • Unlike decimals have different numbers of decimal places.
  • Unlike decimals can be converted into like decimals by adding zeros at the end of the decimal part.
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3. Converting Fractions to Decimals

  • If the denominator is 10, 100, 1000, etc., count the zeros and place the decimal point accordingly.
  • If the denominator is not a power of 10, multiply numerator and denominator by a suitable number to make it so.
  • Example: $\frac{3}{4} = \frac{3 \times 25}{4 \times 25} = \frac{75}{100} = 0.75$
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4. Arithmetic Operations with Decimals

  • Always convert unlike decimals to like decimals before addition or subtraction.
  • Line up decimal points vertically during addition and subtraction.
  • In multiplication, total decimal places in answer = sum of decimal places in both numbers.

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Full Notes

Key Concepts

A fraction whose denominator is 10The number of digits afterLike decimals have the same numberWe can addDecimals are used in expressing money

Frequently Asked Questions

What are the important topics in Decimal Fractions for ICSE Class 6 Mathematics?
Key topics in Decimal Fractions include Understanding Decimal Fractions, Like and Unlike Decimal Numbers, Converting Fractions to Decimals, Arithmetic Operations with Decimals. Study these first, then practise questions on each for Class 6 exams.
How should I revise Decimal Fractions for Class 6 exams?
Learn the core ideas first, then work through the 117 practice questions on Decimal Fractions. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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All ICSE Class 6 Mathematics Revision Notes

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