Understanding the Indian number system (lakh, crore) and its relationship to the international system (million, billion) is essential for finance, exams, and daily use.
India uses a unique number grouping system: after the first 3 digits (hundreds), numbers are grouped in 2s (thousands, lakhs, crores), while the international system groups everything in 3s (thousands, millions, billions).
0.1 lakh = ? 1 lakh = 1,00,000 0.1 lakh = 1,00,000 × 0.1 = 10,000 (Ten Thousand)
100000 spelling: 1,00,000 = One Lakh (Indian system) 100,000 = One Hundred Thousand (International system) Both refer to the same number.
10 crore in number: 1 crore = 1,00,00,000 (7 zeros) 10 crore = 10,00,00,000 = 100,000,000 (8 zeros)
How many zeros in 1 crore? 1 crore = 1,00,00,000 → 7 zeros
| Indian | Value | International |
|---|---|---|
| 1 lakh | 1,00,000 | 100 thousand |
| 10 lakh | 10,00,000 | 1 million |
| 1 crore | 1,00,00,000 | 10 million |
| 10 crore | 10,00,00,000 | 100 million |
| 100 crore | 1,00,00,00,000 | 1 billion |
10 million = 10,000,000 = 1 crore 10 million to lakh = 100 lakh
Memory trick: 1 million = 10 lakh, 1 billion = 100 crore
¼ kg = 0.25 kg = 250 grams
Common use: Recipes, grocery shopping, medical dosing
111 ÷ 3 = 37
Verification: 37 × 3 = 111 ✓
Method:
Alternative: 111 = 90 + 21 = (3×30) + (3×7) = 3 × 37
1 million = 10 lakh, so 1.2 million = **12 lakh**.
Mensuration Formulas for Class 8
Complete list of mensuration formulas for Class 8 Maths. Covers area, perimeter of quadrilaterals, and volume of 3D shapes.
What is the Mid-Point Theorem? (Class 9 Math)
Learn the exact statement and mathematical proof of the Mid-Point Theorem in Class 9 geometry. Understand how a line connecting two mid-points is parallel to the massive base.
What is the Mid-Point Theorem?
Understand the Mid-Point Theorem in geometry. Learn how the line joining the mid-points of two sides of a triangle is parallel to the third side.
Multiplication Table of 26 and 37
Learn the multiplication tables of 26 and 37 for fast calculation in competitive exams like Bank PO, SSC, and Railways.
Natural Numbers Starts From Which Digit?
Learn where natural numbers start from. Understand the difference between natural numbers (starting from 1) and whole numbers (starting from 0).
Turn this guide into revision flashcards, a practice exam, or an AI-generated podcast — free, no signup required.