At the end of the fiscal year of 2004. The federal debt of Country C is $278,560,125,000. What is the closest estimation of this amount? Express your Answer in the form of a single digit times an integer power of ten.
The closest estimation of $278,560,125,000 can be expressed as $2.79 × 10^11.
To express the federal debt of Country C as a single digit times an integer power of ten, we can round the given amount.
The closest estimation of $278,560,125,000 can be expressed as 2.8 x 10^11.
To estimate the closest value to the given federal debt, you can round the value to the nearest power of ten.
In this case, the given federal debt is $278,560,125,000.
To round it to the nearest power of ten, we can look at the digits in the billions place (125,000,000). We ignore the digits after the billions place (000).
If the digit in the billions place is 1-4, we round down to the nearest power of ten. If the digit is 5-9, we round up.
In this case, the digit in the billions place is 1. Therefore, we round down.
The nearest power of ten, when rounded down, would be $200,000,000,000.
So, the closest estimation of the federal debt of Country C at the end of the fiscal year of 2004 is $200,000,000,000.