# 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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