Question
At the end of fiscal year 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 10.(1 point)
Responses
2 × 1011
2 times 10 superscript 11 baseline
3 × 10−11
3 times 10 superscript negative 11 baseline
2.79 × 1011
2.79 times 10 superscript 11 baseline
3 × 10^11
3 × 10^11 is the closest estimation of $278,560,125,000.
How many times less is 10^2 than 10^6 ? Express your answer as an integer power of 10.(1 point)
Responses
0.0001
0.0001
10,000
10,000
10−4
10 superscript negative 4 baseline
104
10 superscript 4 baseline
10^2 is 10,000 times less than 10^6.
Roughly, it takes light less than 0.000000003 of a second to travel a one-meter distance. Express this number in the form of a × 10^n where 1 < a < 10 and is a one-digit number.(1 point)
Responses
3 × 108
3 times 10 superscript 8 baseline
3 × 109
3 times 10 superscript 9 baseline
3 × 10−8
3 times 10 superscript negative 8 baseline
3 × 10−9
3 times 10 superscript negative 9 baseline
It takes light roughly 3 × 10^-9 of a second to travel a one-meter distance.
Question
Country S has 12,345,000 residents who tested positive for COVID-19. What is the largest place value of the numeric part of this quantity?(1 point)
___million