8th Grade Math Review - 2nd Six Weeks Question Preview (ID: 33256)


2nd Six Weeks Test. TEACHERS: click here for quick copy question ID numbers.

A disk can hold 64,000,000 bytes of information. Express this number in scientific notation.
a) 64.0 x 10 ^6
b) 6.4 x 10^7
c) 64 x 10 ^7
d) 640 x 10 ^6

A square tile has an area of 144 square centimeters. Which is the best estimate of the length of one side?
a) 10.0 centimeters
b) 10.2 centimeters
c) 12 centimeters
d) 12.5 centimeters

The number 172 lies between which two perfect squares
a) 18^2 and 19^2
b) 13^2 and 14^2
c) 12^2 and 13^2
d) 14^2 and 15^2

The radius of an atom is one nanometer, which is approximately 3.937 x 10^-8 of an inch. What is the length expressed in standard notation?
a) 0.0000000003937
b) 0.00000003937
c) 0.0000000003937
d) 0.0000003937

The distance is 0.00000782 miles. How is that number of miles expressed in scientific notation?
a) 7.82 x 10^6
b) 7.82 x 10 ^-6
c) 78.2 x 10^7
d) 78.2 x 10^-7

Which set of numbers is in order from least to greatest
a) -0.4, -3/5, -2/3, -1 1/5
b) -1 1/5, -2/3, -3/5, -0.4
c) -1 1/5, -2/3, -0.4, -3/5
d) -0.4, -2/3, -3/5, -1 1/5

Write 998,000 in scientific notation.
a) 9.998 x 10 ^5
b) 99.8 x 10 ^5
c) 9.98 x 10 ^-5
d) 9.98 x 10 ^5

Which of the following expressions has a value of 12?
a) The square root of 169
b) The square root of 173
c) The square root of 144
d) The square root of 193

Which choice is more than 10 but less than 11
a) square root of 169
b) square root of 144
c) square root of 100
d) square root of 110

Find the square root of 64/81
a) 7/8
b) 8/9
c) 10/11
d) 4/3

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