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Common Core Standard 8.NS.A.1 Questions

Know that numbers that are not rational are called irrational. Understand informally that every number has a decimal expansion; for rational numbers show that the decimal expansion repeats eventually, and convert a decimal expansion which repeats eventually into a rational number.

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Grade 8 Rational and Irrational Numbers CCSS: 8.NS.A.1
Choose the number that is irrational.
  1. [math]21/99[/math]
  2. [math]sqrt101[/math]
  3. [math]sqrt(36/3[/math]
  4. [math]2/94[/math]
Grade 8 Rational and Irrational Numbers
Grade 8 Rational and Irrational Numbers CCSS: 8.NS.A.1
Choose the number that is irrational.
  1. [math]sqrt123[/math]
  2. [math]88/41[/math]
  3. [math]sqrt43[/math]
  4. [math]23/69[/math]
Grade 8 Rational and Irrational Numbers CCSS: 8.NS.A.1
Which of the following is NOT a characteristic of all rational numbers?
  1. They are integers
  2. They can continue on for forever with no pattern
  3. They must be a perfect square root
  4. They are a fraction
Grade 8 Rational and Irrational Numbers CCSS: 8.NS.A.1
Which of the following best describes [math]- sqrt3[/math]?
  1. whole and irrational
  2. whole and rational
  3. real and irrational
  4. real and rational
Grade 8 Rational and Irrational Numbers CCSS: 8.NS.A.1
Which number is irrational?
  1. 3.7
  2. 1/4
  3. .25
  4. 1.23124125126127...
Grade 8 Rational and Irrational Numbers CCSS: 8.NS.A.1
Which of these numbers is not irrational?
  1. [math]sqrt29[/math]
  2. [math]sqrt15[/math]
  3. [math]sqrt43[/math]
  4. [math]7/sqrt4[/math]
Grade 8 Rational and Irrational Numbers CCSS: 8.NS.A.1
Grade 8 Rational and Irrational Numbers CCSS: 8.NS.A.1
Grade 8 Rational and Irrational Numbers CCSS: 8.NS.A.1
Which of the following fractions most closely approximates the value of [math]pi[/math]?
  1. [math]7/21[/math]
  2. [math]7/22[/math]
  3. [math]21/7[/math]
  4. [math]22/7[/math]
Grade 8 Rational and Irrational Numbers CCSS: 8.NS.A.1
Grade 8 Rational and Irrational Numbers CCSS: 8.NS.A.1
Grade 8 Rational and Irrational Numbers CCSS: 8.NS.A.1
Grade 8 Rational and Irrational Numbers CCSS: 8.NS.A.1
Grade 8 Rational and Irrational Numbers CCSS: 8.NS.A.1
Grade 8 Rational and Irrational Numbers CCSS: 8.NS.A.1
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