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


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)

What country sold the largest number of Electric Vehicles in 2016?

Grade level:  4th – 5th grades

Skills: Number comparison & Subtraction (Large numbers) 

Related environmental issues: Energy & Climate Change

Dyson, the UK company best known for its vacuum cleaners, recently announced its plan to build its own electric vehicles by 2020.  Conventional cars produce a lot of carbon emissions that contribute to climate change and smog.  Electric vehicles can reduce the emission because those cars are exclusively powered by electricity like iPhones. There were about 2 million electric vehicles running in the world in 2016. The table below shows the number of electric vehicles sold in five countries in 2016.

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  1. What country sold the largest number of electric vehicles in 2016?
  2. Among Japan, the United States, and Canada, which country sold the smallest number of electric vehicles in 2016?
  3. What country sold about half of the electric vehicles sold in China?
  4. How many more electric vehicles did the United Kingdom sell than Japan?

Sources: International Energy Agency, 2017. Global EV Outlook 2017 


Answer keys

  1. China
  2. Canada
  3. United States
  4. 37,912 – 24,851 = 13,061