Rational And Irratonal Square Roots

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| By Carlosvaras

Carlosvaras

Community Contributor

Quizzes Created: 1 | Total Attempts: 259

Questions: 10 | Attempts: 259 | Updated: Mar 21, 2023

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Please answer true or false to the statement.

Questions and Answers

1.

The square root of 64 is irrational.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
The square root of 64 is not irrational. The square root of 64 is 8, which is a rational number because it can be expressed as a fraction (8/1). Irrational numbers cannot be expressed as fractions and have non-repeating, non-terminating decimal representations. Since 8 can be expressed as a fraction and has a terminating decimal representation, it is not irrational. Therefore, the correct answer is false.

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1
0
2.

The square root of 34.6 is rational.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
The square root of 34.6 is not rational because it cannot be expressed as a fraction of two integers. The square root of 34.6 is an irrational number, meaning it goes on infinitely without repeating and cannot be expressed as a simple fraction.

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3.

The square root of 36 is rational.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
The square root of 36 is rational because it equals 6, which is a whole number and can be expressed as a ratio of two integers. In this case, 6 can be written as 6/1, making it a rational number.

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4.

The square root of 81 is rational.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
The square root of 81 is rational because 81 is a perfect square. The square root of a perfect square is always a whole number, and whole numbers are considered rational numbers. In this case, the square root of 81 is 9, which is a whole number and therefore rational.

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5.

The square root of 82 is rational.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
The square root of 82 is not rational because it cannot be expressed as a fraction of two integers. The square root of 82 is an irrational number, which means it cannot be written as a terminating or repeating decimal. Therefore, the correct answer is False.

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6.

The square root of 72.6 is irrational.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
The square root of 72.6 is irrational because it cannot be expressed as a fraction or a terminating or repeating decimal. The decimal representation of the square root of 72.6 goes on indefinitely without repeating, indicating that it is an irrational number.

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7.

The square root of 25 is rational.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
The square root of 25 is rational because a rational number is any number that can be expressed as a fraction of two integers. In this case, the square root of 25 is 5, which can be expressed as the fraction 5/1. Therefore, it is rational.

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8.

The square root of 50 is irrational.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
The square root of 50 is irrational because it cannot be expressed as a fraction or a terminating or repeating decimal. It is a non-repeating, non-terminating decimal. The square root of 50 can be simplified as the square root of 25 times the square root of 2, which is 5 times the square root of 2. Since the square root of 2 is irrational, the square root of 50 is also irrational.

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9.

The square root of 100 is irrational.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
The square root of 100 is irrational because it cannot be expressed as a fraction or a terminating or repeating decimal. The square root of 100 is 10, which is a rational number, but it is also -10, which is also a rational number. Therefore, the square root of 100 has two rational solutions, making it irrational.

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10.

The square root of 49 is irrational.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
The square root of 49 is not irrational because it is equal to 7, which is a rational number.

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Current Version
Mar 21, 2023

Quiz Edited by
ProProfs Editorial Team
Oct 04, 2013

Quiz Created by
Carlosvaras

Rational And Irratonal Square Roots

The square root of 64 is irrational.

The square root of 34.6 is rational.

The square root of 36 is rational.

The square root of 81 is rational.

The square root of 82 is rational.

The square root of 72.6 is irrational.

The square root of 25 is rational.

The square root of 50 is irrational.

The square root of 100 is irrational.

The square root of 49 is irrational.