# Reading and Writing Large Numbers

In reading and writing large numbers we group place values into periods ‘ones or unit’, ‘tens’, ‘hundred’, ‘thousand’, ‘10 thousand’, ‘100 thousand’, ‘million’, ’10 million’, ‘100 million’, ‘billion’, ’10 billion’, ‘100 billion’, ‘trillion’ are periods.

For example:

Ones/Unit = 1

Tens = 10

Hundred = 100

Thousand = 1,000

10 Thousand = 10,000

100 Thousand = 100,000

Million = 1,000,000

10 Million = 10,000,000

100 Million = 100,000,000

Billion = 1,000,000,000

10 Billion = 10,000,000,000

100 Billion = 100,000,000,000

The below diagram will help us to get the better concept on facts about reading and writing large numbers.

So, while reading or writing a large number we need to start from the left side with the largest group and move to the right side.

Reading and writing large numbers in words in thousand and hundred:

(i) 3,019 - Three thousand nineteen

(ii) 5,059 - Five thousand fifty-nine

(iii) 8,782 - Eight thousand seven hundred eighty-two

(iv) 41,018 - Forty-one thousand eighteen

(v) 52, 739 - Fifty– two thousand seven hundred thirty-nine

(vi) 621,011 - Six hundred twenty-one thousand eleven

(vii) 530,008 - Five hundred thirty thousand eight

(viii) 765,941 - Seven hundred sixty-five thousand nine hundred forty-one

Reading and writing large numbers in words in million, thousand and hundreds:

(i) 6,254,745- Six million two hundred fifty-four thousand seven hundred forty-five

(ii) 31,286,271 - Thirty-one million two hundred eighty-six thousand two hundred seventy-one

(iii) 731,256,835 - Seven hundred thirty-one million two hundred fifty-six thousand eight hundred thirty-five

(iv) 651,356,851 - Six hundred fifty-one million three hundred fifty-six thousand eight hundred fifty-one

Reading and writing large numbers in words in billion, million, thousand and hundred:

(i) 4,451,638,534 - Four billion four hundred fifty-one million six hundred thirty-eight thousand five hundred thirty-four

(ii) 4,230,453,872 - Four billion two hundred thirty million four hundred fifty-three thousand eight hundred seventy-two

(iii) 51,462,648,572 - Fifty-one billion four hundred sixty-two million six hundred forty-eight thousand five hundred seventy-two

(iv) 42,230,453,896 - Forty-two billion two hundred thirty million four hundred fifty-three thousand eight hundred ninety-six

(v) 82,213,456,897 - Eighty-two billion two hundred thirteen million four hundred fifty-six thousand eight hundred ninety-seven

(vi) 641,496,632,823 - Six hundred forty-one billion four hundred ninety-six million six hundred thirty-two thousand eight hundred twenty-three

(vii) 981,482,637,874 - Nine hundred eighty-one billion four hundred eighty-two million six hundred thirty-seven thousand eight hundred seventy-four

(vii) 956,491,638,852 - Nine hundred fifty-six billion four hundred ninety-one million six hundred thirty-eight thousand eight hundred fifty-two.

## Large Numbers

We have studied the following pattern regarding the smaller numbers:

Let us extend the same pattern to get the larger numbers:

We observe that the value of each place increases 10 times as we move one place from right to left, i.e., ones to tens, tens to hundreds, hundreds to thousands, etc.

However, to read numerals of larger numbers without difficulty, we group the places into periods in the place value chart.

These periods are usually separated by commas (,).

1. The total number of 6-digit number is

(a) 9,000

(b) 90,000

(c) 9,00,000

(d) 900

Solution:

Greatest six-digit number = 9,99,999

Greatest five-digit number = 99,999

Total number of six-digit numbers 9,99,999 - 99,999 = 9,00,000

So, the option (c) is correct, which is the required answer, i.e., answer (c).

2. How many 5-digit numbers are there in all?

Solution:

Greatest five-digit number = 99,999

Greatest four-digit number = 9,999

Total number of five-digit numbers 99,999 - 9,999

= 90,000

3. The total no. of 8-digit numbers is

(i) 9999999

(ii) 90000000

(iii) 10000000

(iv) 99999999

Solution:

Greatest eight-digit number = 9,99,99,999

Greatest seven-digit number = 99,99,999

Total number of five-digit numbers 9,99,99,999 - 99,99,999

= 9,00,00,000

Reading and Writing Large Numbers - Worksheets

Worksheet on Reading and Writing Large Numbers

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