Friday , August 19 2022

# NCERT 5th Class (CBSE) Mathematics: Large Numbers

## INTERNATIONAL PLACE VALUE SYSTEM

The population of the United States of America is more than 300000000.

That is a 9-digit number which we will read as 30 crore (30,00,00,000) in the Indian system of numeration and as 300 million (300,000,000) in the international system of numeration.

The international system has three places for every period.

### Word from

Three million, six hundred eighty-one thousand, four hundred ninety-five

Twenty-three millionsix hundred eighty-one thousand, four hundred ninety-five

One hundred twenty-three millionsix hundred eighty-one thousand, four hundred ninety-five

### Billion

Numbers that go beyond nine digits can be expressed by extending the international place value system to the left of the hundred millions place. That goes to a new period called the billions period.

A billion is a very big number and difficult to imagine.

If you counted numbers one, two, three, up to one billion and used one second for every number you counted (in other words, when you reached the number sixty, one minute would have passed), then it would take you 31 years to reach the number one billion!

One billion seconds takes about 31 years.

One billion minutes takes about 1,903 years.

One billion hours takes about 114,077 years.                                                 {1000 million= 1 billion}

One billion days takes about 2,737,850 year.

The billions period has similar places as the other periods in the international place value system.

## चुनौती हिमालय की 5th NCERT CBSE Hindi Rimjhim Ch 18

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