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Decimal Fractions

ICSE · Class 7 · Mathematics

Complete topic list for Decimal Fractions in ICSE Class 7 Mathematics. Key concepts, sub-topics, and what to focus on for board exams.

44 questions30 flashcards5 concepts

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4 Topics · ICSE Class 7 Mathematics

Topics in Decimal Fractions

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1. Meaning of Decimal Fractions

  • A decimal fraction is a fraction whose denominator can be expressed as 10 or some higher power of 10.
  • A decimal point is used to show the absence of the written denominator.
  • If there is no number to the left of the decimal point, a zero is generally written.
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2. Place Value and Decimal Places

  • The first place to the right of the decimal point is the tenths' place.
  • The second place to the right of the decimal point is the hundredths' place.
  • The number of figures following the decimal point is called the number of decimal places.
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3. Converting Between Fractions and Decimals

  • To convert a decimal to a fraction, remove the decimal point and write as many zeroes in the denominator as digits in the decimal part, then simplify.
  • To convert a fraction with denominator 10, 100, 1000, and so on into a decimal, place the decimal point after as many digits of the numerator from the right as there are zeroes in the denominator.
  • If the denominator is not 10, 100, 1000, and so on, divide normally and place the decimal point in the quotient after the unit digit division is completed.
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4. Addition and Subtraction of Decimals

  • In addition and subtraction, decimal points must be written in the same vertical line.
  • Digits with the same place value must be arranged one below the other.
  • Empty places may be filled with zeroes.

Key Concepts

Central concept: Decimal Fractions and Decimal Numbers

Decimal fractionDecimal pointIntegral partDecimal partReading decimal numbersPlace value in decimalsDecimal placesLike decimals

Frequently Asked Questions

What are the important topics in Decimal Fractions for ICSE Class 7 Mathematics?
Key topics in Decimal Fractions include This flowchart shows how the decimal number 23.47 is broken down into place values on both sides of the decimal point., Flowchart showing the process of reading decimal numbers using two different methods., Step-by-step flowchart for converting decimal numbers to fractions.. These are the concepts ICSE Class 7 examiners draw on most — study them first, then practise related questions.
How to score full marks in Decimal Fractions — ICSE Class 7 Mathematics?
Understand the core concepts first, then work through the 44 practice questions available for this chapter. Revise formulas and 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 25 chapters — ICSE Class 7 Mathematics Syllabus

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