This number system allowed math to be done more quickly and efficiently. This, in turn, made buying and selling things easier.

The number system that allowed math to be done more quickly and efficiently is the decimal number system. The decimal system is based on the number 10 and uses digits from 0 to 9 to represent numbers. This system introduced the concept of place value, where the value of a digit is determined by its position in a number.

The decimal system enabled arithmetic operations like addition, subtraction, multiplication, and division to be performed easily. With a standardized system in place, calculations became simpler and faster, leading to increased efficiency in various fields, including commerce.

The decimal system played a crucial role in making buying and selling easier. It facilitated accurate calculations of prices, quantities, and transactions, eliminating the need for complex calculations using other number systems. This made financial transactions more manageable, convenient, and reliable. It also helped in maintaining accurate records and simplifying accounting practices.

Overall, the decimal number system revolutionized mathematics and provided a solid foundation for various analytical and commercial activities, making them quicker, more efficient, and accessible to a wider range of people.