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Eighth Grade (Grade 8) Arithmetic and Number Concepts Questions

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Grade 8 Scientific Notation
What is 0.000062 in scientific notation?
  1. [math]6.2 xx 10^5[/math]
  2. [math]6.2 xx 10^-4[/math]
  3. [math]6.2 xx 10^-5[/math]
  4. [math]6.2 xx 10^4[/math]
Grade 8 Rational and Irrational Numbers CCSS: 8.NS.A.2
Grade 8 Proportional Relationships
Grade 8 Rational and Irrational Numbers CCSS: 8.NS.A.1
Grade 8 Percents
150 is what percent of 30 ?
  1. 5%
  2. 20%
  3. 50%
  4. 500%
Grade 8 Rational and Irrational Numbers CCSS: 8.NS.A.2
Choose the best answer.

[math]sqrt(106)[/math] is between
  1. 10 and 11
  2. 9 and 10
  3. 11 and 12
  4. 8 and 9
Grade 8 Scientific Notation
Convert the number to scientific notation.

137,000,000
  1. [math]1.37xx10^8[/math]
  2. [math]1.37xx10^3[/math]
  3. [math]1.37xx10^10[/math]
  4. None of the Above
Grade 8 Rational and Irrational Numbers CCSS: 8.NS.A.2
Choose the best answer.
[math]sqrt(67)[/math] is between
  1. 9 and 9.5
  2. 9.5 and 10
  3. 8 and 9
  4. 7 and 8
Grade 8 Decimals
Which measurement is the most precise?
  1. 567.8 ft
  2. 5.67 ft
  3. 56.78 ft
  4. 5.678 ft
Grade 8 Decimals
Which measurement is the least precise?
  1. 1.123 cm
  2. 1.23 cm
  3. 1.3 cm
  4. 1.234 cm
Grade 8 Rational and Irrational Numbers
Grade 8 Scientific Notation
Write in scientific notation.

42,300
  1. fourty two thousand three hundred
  2. [math]4.23 xx10^4[/math]
  3. .00423
  4. 40,000 + 2,000 + 300
Grade 8 Scientific Notation
Grade 8 Scientific Notation
Grade 8 Percents
Convert 78.9% to a decimal
  1. 0.0000789
  2. 0.00789
  3. 0.789
  4. 0.0000000000789
Grade 8 Rational and Irrational Numbers CCSS: 8.NS.A.2
Choose the best answer.

[math]sqrt(65)/7[/math] is between
  1. 1 and 1.2
  2. 1 and 1.3
  3. 1 and 1.4
  4. 1 and 1.5
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