Writing whole numbers not exceeding one billion (1 000 000 000) in numerals and in words

A whole number can be written in numerals or in words. A number in numerals shows all the digits forming the number and their place values.

Example

Write the place value of each digit in the following numbers, and then write each number in words:

(a) 11 435 978

(b) 345 783 156

(c) 120 073 856

Answer

(a) The place value of each digit in 11 435 978 is as follows:

• 1 is in ten millions
• 1 is in millions
• 4 is in hundred thousands
• 3 is in ten thousands
• 5 is in thousands
• 9 is in hundreds
• 7 is in tens
• 8 is in ones

Therefore, 11 435 978 in words is eleven million four hundred thirty-five thousand nine hundred and seventy-eight.

(b) The place value of each digit in 345 783 156 is as follows:

• 3 is in hundred millions
• 4 is in ten millions
• 5 is in millions
• 7 is in hundred thousands
• 8 is in ten thousands
• 3 is in thousands
• 1 is in hundreds
• 5 is in tens
• 6 is in ones

Therefore, 345 783 156 in words is three hundred forty-five million seven hundred eighty-three thousand one hundred and fifty-six.

(c) The place value of each digit in 120 073 856 is as follows:

• 1 is in hundred millions
• 2 is in ten millions
• 0 is in millions
• 0 is in hundred thousands
• 7 is in ten thousands
• 3 is in thousands
• 8 is in hundreds
• 5 is in tens
• 6 is in ones

Therefore, 120 073 856 in words is one hundred twenty million seventy-three thousand eight hundred and fifty-six.