Applied Practice with Scientific Notation Topic Index | Algebra Index | Regents Exam Prep Center

Try these practice problems, and click on the "Answer" link to check your work.

 1 Light travels at approximately               3.0 x 108  m/sec.   How far does light travel in one week? Answer

 2 Assume that there are 20,000 runners in the New York City Marathon..  Each runner runs a distance of 26 miles.   If you add together the total number of miles for all runners, how many times around the globe would the marathon runners have gone?   Consider the circumference of the earth to be 2.5 x 104 miles.

 3 Mercury's average distance from the sun is 57,910,000 km.  The Earth is approximately 93,000,000 miles from the sun.  What would be the distance of a trip from Mercury to Earth, via the Sun.  Look out for the units!!!                      (1 km = 0.62 mi)  Use Scientific Notation to solve this question. Answer

 4 One of the fastest supercomputers in the world is NEC's Earth Simulator, which operates at a top-end of 40 teraflops (forty trillion operations per second).   How long would it take this computer to perform 250 million calculations?

 5 The half-life of Uranium 234 is 2.5 x 105 years and the half-life of Plutonium is 8.0 x 107 years.  How many times greater is the half-life of Plutonium than Uranium 234?

 6 The Earth is approximately 93,000,000 miles from the sun.  How long does it take light from the sun to reach the earth?  Use the speed of light to be 1.86 x 105 miles per second.

 7 Light travels at a speed of 1.86 x 105 miles per second.  If a "light year" is the distance that light travels in one year, how many miles are in a light year?

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