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Indian Number System

ICSE · Class 5 · Mathematics

Flashcards for Indian Number System — ICSE Class 5 Mathematics. Quick Q&A cards covering key concepts, definitions, and formulas.

39 questions25 flashcards5 concepts

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25 Flashcards
Card 1Number Names

Write the number name for 4,56,78,901.

Answer

Step 1: Identify periods — Crores, Lakhs, Thousands, Units. Step 2: Read each period: - 4 → Four crore - 56 → Fifty-six lakh - 78 → Seventy-eight thousand - 901 → Nine hundred one Answer: Four crore f…

Card 2Number Names

Write the number name for 7,03,05,020.

Answer

Step 1: Break into periods — 7 (crore), 03 (lakh), 05 (thousand), 020 (units). Step 2: Read each: - 7 → Seven crore - 03 → Three lakh - 05 → Five thousand - 020 → Twenty Answer: Seven crore three lakh…

Card 3Writing Numerals

Write the numeral for: Nine crore thirty-five lakh sixty-two thousand four hundred fifteen.

Answer

Step 1: Write each period: - Crore: 9 - Lakh: 35 - Thousand: 62 - Units: 415 Step 2: Combine with commas: 9,35,62,415. Answer: 9,35,62,415.

Card 4Writing Numerals

Write the numeral for: Twelve crore eight lakh fifty thousand ninety.

Answer

Step 1: Break into parts: - Twelve crore → 12,00,00,000 - Eight lakh → 8,00,000 - Fifty thousand → 50,000 - Ninety → 90 Step 2: Add them: 12,00,00,000 + 8,00,000 = 12,08,00,000 + 50,000 = 12,08,50,000…

Card 5Successor and Predecessor

What is the successor of 6,78,99,999?

Answer

Step 1: Successor means add 1. 6,78,99,999 + 1 = 6,79,00,000 Answer: 6,79,00,000 (Six crore seventy-nine lakh).

Card 6Successor and Predecessor

What is the predecessor of 5,00,00,000?

Answer

Step 1: Predecessor means subtract 1. 5,00,00,000 - 1 = 4,99,99,999 Answer: 4,99,99,999 (Four crore ninety-nine lakh ninety-nine thousand nine hundred ninety-nine).

Card 7Comparison of Numbers

Compare: 3,45,67,890 and 34,56,789. Which is greater?

Answer

Step 1: Count digits. - 3,45,67,890 → 8 digits - 34,56,789 → 7 digits Rule: More digits = greater number. Answer: 3,45,67,890 > 34,56,789.

Card 8Comparison of Numbers

Compare: 7,89,45,600 and 7,89,54,600. Which is greater?

Answer

Step 1: Both have 8 digits. Step 2: Compare from left: - Crores: 7 = 7 - Ten Lakhs: 8 = 8 - Lakhs: 9 = 9 - Ten Thousands: 4 vs 5 → 4 < 5 So, 7,89,45,600 < 7,89,54,600 Answer: 7,89,54,600 is greater.

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Frequently Asked Questions

What are the important topics in Indian Number System for ICSE Class 5 Mathematics?
Key topics in Indian Number System include Indian Number System – Chapter Overview, Place value positions from largest to smallest, showing the hierarchy of the Indian Number System, Progression of number system showing how numbers increase from Lakh to Hundred Crore. These are the concepts ICSE Class 5 examiners draw on most — study them first, then practise related questions.
How to score full marks in Indian Number System — ICSE Class 5 Mathematics?
Understand the core concepts first, then work through the 39 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.
How many flashcards are available for Indian Number System?
There are 25 flashcards for Indian Number System covering key definitions, formulas, and concepts. Use them daily for 10–15 minutes for best results.

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