First Six Weeks Test Review: Question Preview (ID: 26716)


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How is this number written in scientific notation: 0.0000000508
a) 5.08 x 10 ^ -8
b) 5.8 x 10 ^ -8
c) 50.8 x 10 -7
d) 508 x 10 ^-7

An elephant weighs approximately 6,000 pounds. How is this number expressed in scientific notation?
a) .6 x 10 ^-4
b) 6 x 10 ^3
c) 60 x 10 ^ 2
d) 6 x 10 ^ -3

The distance from the sun to the earth is 159,600,000,000 miles. How is this number expressed in scientific notation?
a) 15.96 x 10 ^ 10
b) 1.5 x 10 ^ 11
c) 1596 x 10 ^11
d) 1.596 x 10 ^11

Calculate the average distance from the mean of the following numbers : 14, 13, 15, 13, 16
a) 14.2
b) 5.2
c) 1.04
d) 0

Calculate the average distance from the mean of the following numbers : 72, 61, 70, 68
a) 3.375
b) 0
c) 13.5
d) 67.75

Evaluate for x: x/4 + 7 = -x + 32
a) 3 1/4
b) 9
c) 20
d) 15

Evaluate for x: 0.25x + 10 = -2x + 27
a) 5
b) 13
c) 22
d) 9

Which of the following shows these numbers -20, 10. -24, -6, 0 listed correctly from least to greatest?
a) -6, -20, -24, 0 , 10
b) -24, -20, -6, 0, 10
c) 10, 0 , -6, -20, -24
d) -24, 10, -20, -6, 0

Which of the following shows theses numbers 80%, 0.827, 1/3, 8 from greatest to least?
a) 1/3, 8, 0.827, 80%
b) 8, 80% , 0.827, 1/3
c) 0.827, 80%, 8, 1/3
d) 8, 0.827, 80%, 1/3

Which of the following shows two rational numbers and two integers?
a) 0.135135135......, -8/2, -0.4, -13
b) 0.839849384....., -0.4, -9, 8
c) -0.4, -0.5, 0.2, 0.3
d) 1/3, 0.49438940...., -2, -5

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