TOP SUN-POWERED states in the United States

Grade level: 4th – 5th grades

Skills: Rounding

Related environmental issues: Renewable Energy

The table below shows how much solar power was generated from the top five solar power generating states in the United States in December, 2017.

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  1. Round the number of Nevada to the nearest hundreds.
  2. Rounded to the nearest tens, will North Carolina and Arizona have the same number or not?
  3. The number of which state becomes 200 when rounded to the nearest hundreds? List all.
  4. When rounded to the nearest ______, the number of California becomes 2,000.  A) ones B) tens C) hundreds D) thousands

 

Mickey-Mouse-Solar-Facility-Walt-Disney-World

The 5MW-Walt Disney World Solar Facility near the Walt Disney World Resort. (Orlando Sentinel)

 

Sources: U.S. Energy Information Administration, 2018. Electric Power Monthly (Table 1.17.A. Net Generation from Solar Photovoltaic)

 

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Answer Keys

  1. 200
  2. Yes.  Both numbers are rounded to 340
  3. Nevada and Texas
  4. D

 

What city has the highest gasoline price?

Grade level: 5th – 6th grades

Skills: Decimals (Subtraction) (number comparison)

Related environmental issues:  Energy

The table below shows the average price of gasoline per gallon in five big cities the United States in March 2018.

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  1. gas-petrol-station-hiAmong the five cities, which city had the highest gasoline price?
  2. Among the five cities, which city had the lowest gasoline price?
  3. What is the difference between the highest price and the lowest price?
  4. Which city had the price 6 cents lower than the price in Chicago?
  5. Which is bigger, the difference between New York City and Los Angeles or the difference between Houston and San Fransisco?

Sources: U.S. Energy Information Administration (2018) Retail Gasoline and Diesel Prices

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Answer keys

  1. Los Angeles
  2. Houston
  3. $1.16 (3.56 – 2.4 = 1.16)
  4. New York City
  5. Houston and San Fransisco (Los Angeles – New York: 3.56 – 2.73 = 0.83)  (San Fransisco – Houston: 3.53 – 2.4 = 1.13)