Math Reflections

In the year 2000, the United States public debt was about 5.6 x 10¹² dollars.  The population of the United States in that year was about 2.8 x 10⁸ people.  What was the average debt per person?

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There are approximately 3.1 x 10⁸ people in the United States. If each person has 4.1 x 10¹ coins, how many coins are there altogether?

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The mass of he sun is 1.989 x 10³⁰ kilograms. The mass of the earth is 5.98 x 10²⁴ kilograms. How many times bigger is the sun than the earth?

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A factory can make 3 × 10⁴ t-shirts per day, how many t-shirts will it make in 2.5 ×10² days?

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In 2012, New York City (NYC) and Los Angeles (LA) has the highest populations of any cities in the United States. NYC’s population was about 8.1 × 10⁶ and LA’s population was about 3.8 × 10⁶. What is the population of these two cities combined?

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What is the BASE in the power below?
4³

• 4

• 3

• 4³

• 64

What is the Exponent in the following example?
-2⁵

• -2

• 2

• 5

• -2⁵

Is 8.27 rational or irrational?

• Rational

• Irrational

• Both

• None of the above

Based on the chart, how many subsets are within the integers set?

• 1

• 2

• 3

• none

Zero is a ___________.

• whole number

• natural number

• whole number, integer, and rational

• irrational