Fermi EstimationHigh School · Modeling · HSN-Q.A.3, HSN-Q.A.1
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High School · Modeling · Think & learn · Ages 14–18

Fermi Estimation

Maths standardHSN-Q.A.3HSN-Q.A.1Choose a sensible level of accuracy and estimate quantities by building a model from simple assumptions.

  1. Break the question into steps you can estimate.
  2. Round every number to one or two digits.
  3. Pick the closest power of ten.
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