
Unit 2 Review 10.27.22
Mathematics
8th Grade

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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2. On average, Mercury is about 57,000,000 km from the sun, whereas Neptune is about 4.5 x 10^9 km from the sun. What is the difference between Neptune’s and Mercury’s distances from the sun?
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2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
The mean distance from the sun to Earth is 9.29 x 107 miles. Jupiter's mean distance from the sun is 4.8388 x 108 miles. What is the difference between these two distances in miles?
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3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
The mass of he sun is 1.989 x 1030 kilograms. The mass of the earth is 5.98 x 1024 kilograms. How many times bigger is the sun than the earth?
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4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A computer's hard disk drive holds 8 x 107 bytes of information. If Jill buys an extra memory stick that holds 3 x 106 bytes of information, how much memory will the computer hold?
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5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In 2012, New York City (NYC) and Los Angeles (LA) has the highest populations of any cities in the United States. NYC’s population was about 8.1 × 106 and LA’s population was about 3.8 × 106. What is the population of these two cities combined?
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6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
The population of Mathville is 5.6 x 103. The population of Algeville is 1.3 x 104. How many more people are there in Algeville?
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7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A microgram is equal to 1 x 10 -6 grams. How many times greater than a microgram is 1 x 102 grams?
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