What are the Top 5 wind-powered states?

Grade level: 4th – 6th grades

Skills: Decimal numbers (addition and subtraction)

Related environmental issues:  Energy

The table below shows wind power capacity in the top 5 states in the United States by the end of 2017.

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  1. What state had the largest wind power capacity in the United States by the end of 2017?
  2. What is the difference between the largest and the smallest numbers?
  3. Which state had the wind power 2.4 gigawatts more than that in Kansas?
  4. What is the difference between the wind power in Iowa and that in California?

Sources: U.S. Department of Energy (2018) US Wind Power Cumulative Installed Capacity

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Answer keys

  1. Texas
  2. 17.54 (22.64 – 5.10 = 17.54)
  3. Oklahoma
  4. 1.7 gigawatts (7.31 – 5.61 = 1.7)

 

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)