Grade Practice Test | Lumos Learning

The population of California is approximately 3.7 x 107 people. The land area of California is approximately 1.6 x 105 square miles. Divide the population by the area to find the best estimate of the number of people per square mile in California.

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Mercury is approximately 6 x 107 kilometers from the Sun. The speed of light is approximately 3 x 105 kilometers per second. Divide the distance by the speed of light to determine the approximate number of seconds it takes light to travel from the Sun to Mercury.

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Simplify (4 x 106) x (2 x 103) and express the result in scientific notation.

Expressions & Equations (8.EE.A.4)

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