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Chapter Summary

Decimal Fractions

ICSE · Class 5 · Mathematics

Summary of Decimal Fractions for ICSE Class 5 Mathematics. Key concepts, important points, and chapter overview.

104 questions25 flashcards5 concepts

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Overview

In this chapter, we learn about decimal fractions — a special type of fraction where the denominator is 10 or a multiple of 10 like 100 or 1000. Instead of writing them as fractions, we use a decimal point to represent them. For example, 7/10 is written as 0.7. Decimals help us write numbers more ea

Key Concepts

A decimal fraction is a fraction

A decimal fraction is a fraction with a denominator of 10, 100, 1000, etc. It is written with a decimal point. For example, 3/10 = 0.3, 25/100 = 0.25.

Each digit in a decimal number

Each digit in a decimal number has a place value. To the left of the decimal are ones, tens, hundreds. To the right are tenths, hundredths, thousandth

Like decimals have the same number

Like decimals have the same number of digits after the decimal point, such as 2.50 and 1.75. Unlike decimals have different numbers, like 3.4 and 5.67

We can add

We can add, subtract, multiply, and divide decimals just like whole numbers, but we must line up the decimal points during addition and subtraction, a

Rounding means simplifying a decimal number

Rounding means simplifying a decimal number to a nearby value. For example, 3.78 rounded to the nearest tenth is 3.8, because 8 is greater than 5.

Learning Objectives

  • Understand what decimal fractions are and how they are written
  • Learn the place value of digits in decimal numbers
  • Convert between decimal fractions and common fractions
  • Compare and arrange decimal numbers
  • Round off decimal numbers to the nearest whole number, tenth, or hundredth

Frequently Asked Questions

What are the important topics in Decimal Fractions for ICSE Class 5 Mathematics?
Decimal Fractions covers several key topics that are frequently asked in ICSE Class 5 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Decimal Fractions — ICSE Class 5 Mathematics?
Understand the core concepts first, then work through the 104 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 22 chapters — ICSE Class 5 Mathematics Chapter Summary

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