What trash was thrown away the most?

Grade level: 4th – 6th grades

Skills:DECIMALS  (Comparison)

Related environmental issues: Recycle

 

Almost every activities we do in our lives leaves behind some type of trash. The United States threw away 4.51 pounds of trash per person every day in 2017. The table below shows how much each trash was thrown away per person a day in 2017.

 

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Write <, >, or = in each square to compare a true statement about the two decimal numbers.

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Source: U.S.Environmental Protection Agency, 2019. Advancing sustainable materials management: 2017 fact sheet. 


 

Answer keys

1. >
2. <
3. <
4. >

 

Factful Environmental Math Problems (2020)

Just published and now available from Amazon  (paperback)

About this book

The objective of Factful Environmental Math Problems is to cultivate our young people’s skills to analyze and evaluate fact-based data for understanding our world, while improving their math skills and critical thinking skills.

With the rise of the Internet and new technology, building skills to analyze and evaluate fact-based data becomes increasingly important for our young people to prepare for this rapidly changing world. These skills minimize their chances of being brainwashed by false information and making uninformed decisions and ultimately help develop their critical thinking skills. (Read more)

Screen Shot 2020-04-02 at 10.20.25 AM

 

Screen Shot 2020-04-02 at 10.31.32 AM

Screen Shot 2020-04-02 at 10.31.38 AM

unknown-1

Published: March 26, 2020

Price: $6.25

Which county had more electric cars – the U.S. or Japan?

Grade level: 4th – 6th grades

Skills:DECIMALS (PLACE VALUE & ROUNDING)

Related environmental issues: Others

 

The number of electric cars on the road has been significantly increasing.  There were over 5 million electric cars running in the world in 2018. The table below shows the number of electric cars sold in four countries in 2018.

 

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  1. What place is the 1 in the number of electric cars sold in Canada?
  2. Round the number of electric cars sold in the United Kingdom to the nearest tenth.
  3. Round the number of electric cars sold in Japan to the nearest whole number.
  4. What digit is in the hundredth place in the number of electric cars sold in the United States?
  5. The expanded form of the number of electric cars sold in China* is 1,000 + 70 + 8 + 0.5 + 0.03. Write the number in the standard form.

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International Energy Agency, 2019. Global EV Outlook 2019 (Figure 1).


 

Answer keys

1. The tenth place
2. 50.4
3. 50
4. 2
5. 1,078.53 (*thousand)

 

Factful Environmental Math Problems (2020)

Just published and now available from Amazon  (paperback)

About this book

The objective of Factful Environmental Math Problems is to cultivate our young people’s skills to analyze and evaluate fact-based data for understanding our world, while improving their math skills and critical thinking skills.

With the rise of the Internet and new technology, building skills to analyze and evaluate fact-based data becomes increasingly important for our young people to prepare for this rapidly changing world. These skills minimize their chances of being brainwashed by false information and making uninformed decisions and ultimately help develop their critical thinking skills. (Read more)

Screen Shot 2020-04-02 at 10.20.25 AM

 

Screen Shot 2020-04-02 at 10.31.32 AM

Screen Shot 2020-04-02 at 10.31.38 AM

unknown-1

Published: March 26, 2020

Price: $6.25