I don't know this

Dear Student,

To write the given number as per the International system, we need to follow the rules. As per the International system, the following rules are followed to write a number:

1. We start assigning the commas from the right.  After every three digits, a comma is inserted.
2. As per the norms

• 3 zeros represent a thousand
• 6 zeros represent a million
• 9 zeros represent a billion

So let us assign the above-learned rules to the given set of numbers:

(a) 343,879,009 
= In word format: Three hundred forty-three million eight hundred seventy-nine thousand nine. 

(b) 23,567,897
= In word format: Twenty-three million five hundred sixty-seven thousand eight hundred ninety-seven.

(c) 567,890,098
= In word format: Five hundred sixty-seven million eight hundred ninety thousand ninety-eight.

(d) 123,456,789
= In word format: One hundred twenty-three million four hundred fifty-six thousand seven hundred eighty-nine.

(e) 3,006,009
= In word format: Three million six thousand nine.

Regards