*Grade level: 5th grades*

*Skills: Multiplication & Division*

*Related environmental issues: Water*

*Area level: Global*

All foods you eat every day need water to be produced. Among them, beef production requires a lot of water. It takes 460 gallons of water to produce a 4 oz. beef steak.

- Producing one apple needs 33 gallons of water. How many apple can you produce with 460 gallons of water.
- Producing an egg needs 52 gallons of water. Which needs more water, producing 8 eggs or a beef streak?
- Producing a grilled chicken (4 oz.) needs 95 gallons of water. You ate 1/3 of a beef steak for lunch. Which needs more water, producing a grilled chicken or 1/3 of a beef steak?

Source: Water Footprint Network

Note) A beef steak here is 4 ounces.

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Answer keys

- 33 apples (460 / 33 = 13 R 31)
- One serving of beef ( Producing 8 eggs needs 416 gallons of water)
- 1/3 of one serving of beef (1/3 of one serving of beef needs about 153 gallons of water : 460 / 3 = 153 R 1)

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