Write 815642120 in words (in the International system).
An international place value system has to place the value of numbers in the sequence ones, tens, hundreds, thousands, ten thousand, hundred thousand, millions, ten million, hundred million, billions, and so on.
Answer: In the international system 815,642,120 is written as 'Eight hundred fifteen million six hundred forty two thousand one hundred twenty'.
To write any number in an international number system, we will have to rewrite the given number with commas after every third digit starting from the right-hand side of the number and then use the place values.
Let's rewrite the given number with commas:
Starting from the right-hand side of the number, using the place values with respect to the digits, we get:
The given number is, therefore: Eight hundred fifteen million six hundred forty two thousand one hundred twenty.