Round 210,290,290,290.21029 to the nearest ten million

210,300,000,000

No.

210,000,000,000

To round a number to the nearest ten million, follow these steps:

1. Identify the ten million place, which is the digit in the tens of billions place (the digit immediately to the left of the billions place).
2. Look at the digit to the right of the ten million place.
3. If the digit is 5 or greater, increase the ten million place by 1 and replace all digits to the right with zeroes.
4. If the digit is less than 5, leave the ten million place unchanged and replace all digits to the right with zeroes.

In the given number, 210,290,290,290.21029, the ten million place is occupied by the digit 2. The digit to the right of the ten million place is 0.

Since 0 is less than 5, we leave the ten million place (2) unchanged and replace all the digits to the right with zeroes. Thus, rounding to the nearest ten million gives us the rounded value of 210,300,000,000.