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Chapter 5 of 25
Formula Sheet

Playing With Numbers

ICSE · Class 8 · Mathematics

All formulas from Playing With Numbers in ICSE Class 8 Mathematics. Key equations, constants, and identities for board exam preparation.

36 questions34 flashcards5 concepts

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6 Formulas · 2 Sections

Formulas

Generalized Form and Place Values

3479 = 3 × 1000 + 4 × 100 + 7 × 10 + 9 × 1

abc = 100a + 10b + c

ab = 10a + b

Properties of Numbers and Digits

ab + ba = 11(a + b)

ab - ba = 9(a - b); ba - ab = 9(b - a)

abc + bca + cab = 111(a + b + c)

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Frequently Asked Questions

What are the important topics in Playing With Numbers for ICSE Class 8 Mathematics?
Key topics in Playing With Numbers include Playing With Numbers – Complete Chapter Overview, Playing With Numbers – Complete Chapter Overview, Step-by-step process of converting a number to its generalized form. These are the concepts ICSE Class 8 examiners draw on most — study them first, then practise related questions.
How to score full marks in Playing With Numbers — ICSE Class 8 Mathematics?
Understand the core concepts first, then work through the 36 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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