Which countries sold more electric cars in 2016, the United States or China?

Grade level:  3rd – 4th grades

Skills: Rounding

Related environmental issues: Energy & Climate Change

The number of electric vehicles (EVs)* on the road has been significantly increasing.   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. Round the number of EVs sold in Canada to the nearest hundred.
  2. Round the number of EVs sold in the United Kingdom to the nearest thousand.
  3. Round the number of EVs sold in Japan to the nearest 10 thousand.
  4. Round the number of EVs sold in the United States to the nearest 10 thousand.
  5. Round the number of EVs sold in China to the nearest thousand.

* Electric vehicles are exclusively powered by electricity like iPhones and can reduce the emission.

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


Answer keys

  1. 11,600
  2. 38,000
  3. 20,000
  4. 160,000
  5. 336,000


How much solar power was installed in the United States?

Grade level:  5th – 6th grades

Skills: rounding (decimal numbers)

Related environmental issues: Energy

The circle below shows how much new solar power was installed the United States each year between 2005 and 2015.

Round each number to the nearest tenth and hundredth.


Sources: REN 21, 2016

* Solar power means electricity generated by solar panels.


Answer keys