A city has a population of 2,549,786 people. Estimate the population to the nearest million. Express you answer as the product of a single digit and a power of 10.
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Question 1
1.
Rounded to the nearest million, the population is about ________________________.
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Question 2
2.
Written as the product of a single digit and a power of ten, this number is ________ x 10____
Use a single digit times a power of 10 to estimate the number 0.00002468.
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Question 3
3.
Rounded to the nearest hundred thousandth, the number is about ______________________
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Question 4
4.
Written as a single digit times a power of ten, the estimate is _______ x 10______
The approximtae circumferences of Earth and Saturn are shown. How many times greater is the circumference of Saturn than the circumference of Earth?
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Question 5
5.
The circumference of Saturn written as a single digit and a power of 10 is
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Question 6
6.
Saturn's circumference is about _______ times greater thanthe circumference of Earth.
Question 7
7.
Estimate 0.037854921 to the nearest hundreth. Express your answer as a single digit times a power of ten.
Compare the numbers of 6 x 10^{-6} and
2 x 10^{-8}
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Question 8
8.
Which number has the greater value?
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Question 9
9.
Which number has the lesser value?
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Question 10
10.
How many times greater is the greater number?
Question 11
11.
Taylor made $43,785 last year. Use a single digit times a power of ten to express this value rounded to the nearest ten-thousand.
Question 12
12.
The length of a plant cell 8 x 10^{-5} meter. The length of plant cell B is 0.000004 meter. How many times greater is plant cell A's length than plant cell B's length?
Question 13
13.
The diameter of one species of bacteria is shown.
Bonnie approximates this measure as 3 x 10^{-11} meter. Is she correct? Explain.
Question 14
14.
The populations of Cities A and B are 2.6 x 10^5 and 1,560,000, respectively. The populations of City C is twice the population of City B.
The population of City C is how many times the population of City A?