Billion is a very large number that is 1 followed by 9 zeros. It is also known as a thousand millions as 1,000 × 1000,000 = 1000,000,000. The prefix "giga-" in the word "gigameter" refers to billion, which means 1 gigameter is nothing but a billion meters. Billion has two notations, one is 109 which is followed in the American system and the other one is 1012 or 1 followed by 12 zeros which is followed in many non-American countries like French and Germany.

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1.What is a Billion?
2.Technique to Remember Zeroes in Billion
3.Difference Between Billion, Million, and Trillion
4.Solved Examples on Billion
5.Practice Questions on Billion
6.FAQs on Billion

What is a Billion?


In number systems, when you start counting numbers from 0 to 9, 9 to 99, 100 to 999, and so on, you will observe that as you move forward, you will be introduced to 5 digits, 6 digits, 10 digits numbers, and similar higher numbers. A billion is a 10-digit number formed by 1 followed by 9 zeros.

Definition of Billion

A billion is defined as a ten-digit number. It is counted after 100 million and carries forward the chain towards trillions. It is represented as 109, which is the smallest 10-digit number in math.

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Technique to Remember Zeroes in Billion


1 billion is written as 1,000,000,000 and can be represented in two forms.

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Difference Between Billion, Million, and Trillion


As you know in a number system, counting is always in increasing order. So, the increasing order here is million, billion, and trillion. That means, when we multiply 1000 to million, we get billion. Similarly, when we multiply 1000 to a billion, we get a trillion. The basic difference between trillion, billion, and million is visible in the image below:

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Trillion

A trillion is a million times million which can be written as 1,000,000 × 1,000,000 =1,000,000,000,000. In scientific notation, it is represented as 1 × 1012. It can also be treated as a thousand billion. In simple words, it has 12 zeroes.

Million

A million is a thousand times thousand which can be written as 1,000 × 1,000 = 1,000,000. In scientific notation, it is represented as 1 × 106. In simple words, it has 6 zeroes. The basic flow between the place value of the digits and how the chain goes on is shown below:

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Think Tank:

1) Find out what these numbers would be called:

a) 1021

b) 1024

c) 1027

d) 1033

2) Try to write these numbers in the expanded form.

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a) 7,826,657,098

b) 8,013,973,083

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