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Eighth Grade (Grade 8) Arithmetic and Number Concepts Questions

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Grade 8 Systems of Equations CCSS: 8.EE.C.8
Two lines are described by the equations y=3x+4 and y-43=x. If we were to solve this system of equations, what could we say about the solution(s)?
  1. There are infinitely many solutions.
  2. There is one solution.
  3. There are no solutions.
  4. There are two solutions.
Grade 8 Rational and Irrational Numbers CCSS: 8.NS.A.1
Choose the number that is rational.
  1. √6923
  2. √768
  3. √59
  4. √2894
Grade 8 Scientific Notation CCSS: 8.EE.A.4
Which of the following is a correct notation for 0.0000005?
  1. 5×10-6
  2. 5×106
  3. 5×10-7
  4. 5×107
Grade 8 Scientific Notation CCSS: 8.EE.A.4
Convert the number to scientific notation.

137,000,000
  1. 1.37×108
  2. 1.37×103
  3. 1.37×1010
  4. None of the Above
Grade 8 Rational and Irrational Numbers CCSS: 8.NS.A.1
√9√16 is a rational number.
  1. True
  2. False
Grade 8 Scientific Notation CCSS: 8.EE.A.4
Choose the correct scientific notation for 57,000,000.
  1. 5.7×107
  2. 5.7×106
  3. 5.7×105
  4. 5.7×104
Grade 8 Systems of Equations CCSS: 8.EE.C.8, 8.EE.C.8b
What is the solution to y=-x+8 and y=x-2?
  1. (-3,5)
  2. (5,3)
  3. (1,-6)
  4. No solution
Grade 8 Systems of Equations CCSS: 8.EE.C.8, 8.EE.C.8b
What is the solution to y=6x-4 and y=-x+3?
  1. (0,0)
  2. (1,-2)
  3. (1,2)
  4. No solution
Grade 8 Systems of Equations CCSS: 8.EE.C.8, 8.EE.C.8b
The lines 4y=3x-2 and 7y+3x=10 have
  1. no solutions.
  2. 1 solution.
  3. infinitely many solutions.
  4. 2 solutions.
Grade 8 Scientific Notation CCSS: 8.EE.A.4
Which of the following is a correct notation for 0.000078?
  1. 7.8×10-6
  2. 7.8×10-5
  3. 7.8×10-7
  4. 7.8×10-4
Grade 8 Scientific Notation CCSS: 8.EE.A.4
Choose the correct answer.
(2.76×10-3)×(1.93×105)
  1. 5.3×102
  2. 5.3×10-2
  3. 5.3×103
  4. 5.3×10-3
Grade 8 Scientific Notation CCSS: 8.EE.A.4
Choose the correct notation for 64,000,000.
  1. 6.4×105
  2. 6.4×106
  3. 6.4×107
  4. 6.4×108
Grade 8 Rational and Irrational Numbers CCSS: 8.NS.A.2
Choose the best answer.

√106 is between which two numbers?
  1. 10 and 11
  2. 9 and 10
  3. 11 and 12
  4. 8 and 9
Grade 8 Rational and Irrational Numbers CCSS: 8.NS.A.1
Which of these numbers is irrational?
  1. √73
  2. √16
  3. √169
  4. √225
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