PLAYER A

SUPER GENIUS
Level *** / 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 miles.
GENIUS
Level ** / The half-life of Uranium 234 is 2.5 x 105 years and the half-life of Plutonium is 8.0 x 107years. How many times greater is the half-life of Plutonium than Uranium 234? Write your answer in scientific notation and standard form.
ADVANCED
Level ** / Simplify each expression.
1)  2) 3)
BALLER
Level ** / Suppose there are 5 x 106 bacteria in every 2 liters of water. How many bacteria are there in 5 liters of water? Write your answer in scientific notation and standard form.
PROFICIENT
Level ** / Evaluate each expression. Write your answer in scientific notation.
1) 2)
NOVICE
Level * / Simplify each expression.
1) 2) 3)
ROOKIE
Level * / Write each number in scientific notation.
1)  854,000,000,000 2) 0.000008923 3) 468.92
START HERE
Level * / Write each number in standard form.
1)  2) 3)

PLAYER A’s (ANSWERS)

SUPER GENIUS
Level *** / The total miles run is 20,000 x 26 = 520,000 miles (5.2 x 105miles).
Divide the total miles by the circumference.
2.08 x 101times (The runners, together, ran around the globe 20.8 times)
GENIUS
Level ** / The half-life of Plutonium is 3.2 x 102or 320 times greater than Uranium 234.
ADVANCED
Level ** / 1)  2) 3) 1
BALLER
Level ** / bacteria in 5 liters of water (12,500,000 bacteria).
PROFICIENT
Level ** / 1) 2)
NOVICE
Level * / 1) 2) 3)
ROOKIE
Level * / 1)  2) 3)
START HERE
Level * / 1)  3,200,000 2) 0.00537 3) 6.245

PLAYER B

SUPER GENIUS
Level *** / 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?Write your answer in scientific notation.
GENIUS
Level ** / One of the fastest supercomputers in the world isNEC'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? Write your answer in scientific notation and standard form.
ADVANCED
Level ** / Simplify each expression.
1)  2) 3)
BALLER
Level ** / A speck of dust in an electron microscope is 1.2 x 102 millimeters wide. The image in the microscope is 500 times larger than the actual size of the speck of dust. How many millimeters wide is the actual speck of dust? Write your answer in scientific notation and standard form.
PROFICIENT
Level ** / Evaluate each expression. Write your answer in scientific notation.
1) 2)
NOVICE
Level * / Simplify each expression.
1) 2) 3)
ROOKIE
Level * / Write each number in scientific notation.
1)  .024879 2) Eight Billion 3) 722.23
START HERE
Level * / Write each number in standard form.
1)  2) 3)

PLAYER B’s (ANSWERS)

SUPER GENIUS
Level *** / Determine the number of seconds in a year: (60·60·24·365) = 31,536,000 seconds in a year (3.1536 x 107seconds)
Multiply the speed of light by the number of seconds: 5.865696 x 1012miles
GENIUS
Level ** / Forty trillion = 4.0 x 1013 250 million = 2.5 x 108
Divide calculations by operation speed: 6.25 x 10-6seconds to perform 250 million calculations (0.00000625 of a second)
ADVANCED
Level ** / 1)  2) 3)
BALLER
Level ** / The actual speck of dust is 2.4 x 10-1 or 0.24 millimeters wide.
PROFICIENT
Level ** / 1) 2)
NOVICE
Level * / 1) 2) 3)
ROOKIE
Level * / 1)  2) 3)
START HERE
Level * / 1)  0.000525 2) 7,123,000,000 3) 43