Homework 3: Estimating Quantities

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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Rounded to the nearest million, the population is about ________________________.

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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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Rounded to the nearest hundred thousandth, the number is about ______________________

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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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The circumference of Saturn written as a single digit and a power of 10 is

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Saturn's circumference is about _______  times greater thanthe circumference of Earth.

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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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Which number has the greater value?

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Which number has the lesser value?

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How many times greater is the greater number?

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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.

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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?

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The diameter of one species of bacteria is shown.

Bonnie approximates this measure as 3 x 10^{-11} meter. Is she correct? Explain.

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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?

Rounded to the nearest million, the population is about ________________________.

Written as the product of a single digit and a power of ten, this number is ________ x 10____

Rounded to the nearest hundred thousandth, the number is about ______________________

Written as a single digit times a power of ten, the estimate is _______ x 10______

The circumference of Saturn written as a single digit and a power of 10 is

Estimate 0.037854921 to the nearest hundreth. Express your answer as a single digit times a power of ten.

Which number has the greater value?

Which number has the lesser value?

How many times greater is the greater number?

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.

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?

The diameter of one species of bacteria is shown. Bonnie approximates this measure as 3 x 10^{-11} meter. Is she correct? Explain.

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?

Written as the product of a single digit and a power of ten, this number is ____ x 10

Written as a single digit times a power of ten, the estimate is _ x 10

The diameter of one species of bacteria is shown.

Bonnie approximates this measure as 3 x 10^{-11} meter. Is she correct? Explain.

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?