Compare and convert between the Indian (Lakhs/Crores) and International (Millions/Billions) number systems.
Preview · progress not saved — Chapter 1 is free
Introduce the American/International system structure.
In the International system (also called the American system), large numbers are easy to read because commas are placed uniformly.
The digits are grouped from right to left in a simple 3-3-3 pattern (every three digits). After thousands, this system introduces millions, and then billions.
Example: (One billion)
Visual alignment of the Indian and International system commas.
The Indian system groups digits by thousands, lakhs, and crores, while the International system groups them uniformly by thousands, millions, and billions.
Worked example showing how to read 9876501234 in both systems.
Problem. Read the large number by placing commas correctly in both the Indian and International (American) place value systems.
Faded practice for number name conversion in both formats.
Let us write the number 48121620 in both the Indian and International systems.
For the Indian system, we place commas in a 3-2-2 pattern from right to left, making it . Reading the place values, this number is written as Crore Eighty-One Lakh Twenty-One Thousand Six Hundred Twenty.
For the International system, we group the digits uniformly in a 3-3-3 pattern. Placing commas this way gives us 48,121,620. In words, we read the groups from left to right, making it Forty Eight One Hundred Twenty One Thousand Six Hundred Twenty.
Compare quantities across the two systems using <, >, or =.
You are comparing financial reports from two regional offices. Office A reports a revenue of 500 lakhs. Office B reports a revenue of 5 million. Which statement correctly compares these amounts?