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Egg Consumption Reality Check

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Egg Consumption Reality Check

Use the supplied data to test the headline. Show calculations clearly, include units, and use your result to explain your conclusion.

Test the headline

A social media post claims: “People in New Zealand eat more than one billion eggs each year.” Use the information below to decide whether the claim is plausible.

Measure

Estimate

Eggs eaten per person each year

240 eggs

New Zealand population

5,200,000 people

Choose a calculation

1.Which operation combines the two data values to estimate the total number of eggs eaten in a year?
  • 240 + 5,200,000
  • 5,200,000 − 240
  • 240 × 5,200,000
  • 5,200,000 ÷ 240
2.Before calculating exactly, estimate the total by rounding 5,200,000 people to 5,000,000. What estimate do you get?
3.Calculate the estimated annual total using the original data values. Show the multiplication and include the unit.
4.Write your calculated total in billions of eggs.
5.Compare your exact result with your rounded estimate. How much greater is the exact result?

Make and support a conclusion

Use your result as evidence. State a claim, give the calculation, and explain what it tells you about the headline.

6.Write a short response with a claim, the key calculation, and an explanation of whether the headline is supported by the data.
7.Select every mathematical skill used to check this claim.
  • Multiplication
  • Rounding and estimation
  • Converting a large number to billions
  • Using data to evaluate a claim
  • Measuring angles
8.Why should a reader check the numbers behind a surprising public claim?
9.If the annual average rose to 275 eggs per person while the population estimate stayed at 5,200,000, what would the new annual total be?

3 printable pages

  • Egg Consumption Reality Check, page 1 of 3: Test the headline, Choose a calculation

    Page 1

  • Egg Consumption Reality Check, page 2 of 3: Make and support a conclusion

    Page 2

  • Egg Consumption Reality Check, page 3 of 3: 9. If the annual average rose to 275 eggs per person while the population estimate stayed…

    Page 3

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