What state used the largest amount of energy?

Grade level: 3rd – 4th grades

Skills: Expanded notation

Related environmental issues: Energy


The table below shows the average amount of energy used by a person in the top 10 energy using states in 2016.

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1. Arrange the states from greatest to least.

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2. How many even numbers do these numbers have?

3. Which state has a number closest in value to 490?

4.Which state has a number whose expanded notation is written as

(4 x 100) + (7 x 10) + (2 x 1)?

5. How can you write Indiana’s number in expanded notation?

Sources:U.S. Energy Information Administration


Answer keys

  1. Screen Shot 2018-09-14 at 10.29.47 AM
  2. 3
  3. Iowa
  4. Texas
  5. (4 x 100) + (2 x 10) + (2 x 1)

How much water is used for agriculture?

water-bubbles-vector_633194Grade level: 3rd – 5th

Skills: Rounding

Related environmental issues: Water

Area level: National

Our country withdraws a lot of water for our homes, business, schools, industry, agriculture, as well as for electricity generation. The table below shows how much water is consumed for those purposes by a single person in the United States in a year.

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1.Round the number of gallons used for homes to the nearest hundreds.

2.Round the number of gallons used for agriculture to the nearest ten thousands.

3.Which number becomes 200,000 when rounded to the nearest hundred thousands?

4.Which place would you have rounded 50,590 to if your answer was 50,590?

Source: US Geological Survey


Answer keys

  1. 4,400
  2. 150,000
  3. electricity generation
  4. the tens place