Category: State

What percent of vehicles sold in California were ZEV (Zero-emission vehicles) in 2021?

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Factful math: Grade 4th-6th

Math skills: Percent

Related Environmental issues: Air / Climate change / Electric vehicles

California plans to stop selling gasoline-powered vehicles and sell only ZEVs (Zero-emission vehicles) by 2035.

About 2 million vehicles were sold in California in 2021. Among those vehicles, 250 thousand vehicles were ZEVs.  About what percent of vehicles sold in California were ZEVs in 2021?

ANSWER  about 13%

250 / 2000 x 100 = 12.5 = about 13%

Source: California Energy Commission, New ZEV Sales in California

Note: ZEV here includes BEV, PHEV, and FCEV.

 

How many times more CO2 does pork dinner emit to produce than steak dinner?

Factful math: Grade 3rd-5th

Math skills: fraction

Related Environmental issues:Climate change

How many times more CO2 does the pork dinner emit to produce than the steak dinner?

[A. 4 times more B. 1/4 times more]

ANSWER 

8.18 / 36.45  = about 1/4

Source: Teletrac Navman, Food miles and CO2 emissions infographic

FACTFUL ENVIRONMENTAL MATH PROBLEMS (2020)

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)

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Published: March 26, 2020

Price: $6.25