# Real Numbers Quiz Questions And Answers

Reviewed by Janaisa Harris
Janaisa Harris, BA-Mathematics |
Mathematics Expert
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Ms. Janaisa Harris, an experienced educator, has devoted 4 years to teaching high school math and 6 years to tutoring. She holds a degree in Mathematics (Secondary Education, and Teaching) from the University of North Carolina at Greensboro and is currently employed at Wilson County School (NC) as a mathematics teacher. She is now broadening her educational impact by engaging in curriculum mapping for her county. This endeavor enriches her understanding of educational strategies and their implementation. With a strong commitment to quality education, she actively participates in the review process of educational quizzes, ensuring accuracy and relevance to the curriculum.
, BA-Mathematics
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Quizzes Created: 2 | Total Attempts: 9,985
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Do you know anything about real numbers in mathematics? Do you think you can pass this quiz based on a real number system? Real numbers include both rational and irrational numbers. All rational numbers, including integers, fractions, and decimal numbers, come under real numbers. Here, in this quiz, you'll have to solve questions based on a real number system. Do you think you can do so? Take this quiz and see if your knowledge of real numbers adds up.

• 1.

### What is a rational number?

• A.

A number that cannot be written as a fraction

• B.

A number that can be written as a fraction

• C.

An infinite, non-recurring decimal.

• D.

A surd

B. A number that can be written as a fraction
• 2.

D.
• 3.

### Which of the following sets represents the set of NATURAL NUMBERS?

• A.

{..., -3,-2,-1,0,1,2,3 ...}

• B.

{0,1,2,3,4,5, ...... }

• C.

{ 1,2,3,4,5,...}

• D.

{2,4,6,8,10,...}

• E.

{1.3.5.7,9, ...}

C. { 1,2,3,4,5,...}
• 4.

### Which number is written in decimal?

• A.

1300

• B.

130

• C.

0.13

• D.

113

• E.

13

C. 0.13
Explanation
The correct answer is 0.13

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• 5.

• A.

1

• B.

2

• C.

3

• D.

4

• E.

7

D. 4
• 6.

B.
• 7.

A.
• 8.

### Explain why a mixed number is a rational number?

• A.

Because it is not a decimal.

• B.

Because it can be expressed as a decimal.

• C.

Because it can be expressed as an improper fraction.

• D.

Because it is a recurring decimal.

• E.

Because it is not an integer.

C. Because it can be expressed as an improper fraction.
Explanation
A mixed number can be expressed as an improper fraction by converting the whole number part into a fraction and adding it to the fractional part. An improper fraction is a rational number because it can be represented as the ratio of two integers, where the numerator and denominator are both integers. Therefore, since a mixed number can be expressed as an improper fraction, it is also a rational number.

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• 9.

D.
• 10.

### What is 53600000  written in scientific notation?

• A.

5.36 * 10^6

• B.

53.6* 10^6

• C.

5.36* 10^7

• D.

5.36* 10^8

Explanation
53600000 written in scientific notation is 5.36 x 10^7. In scientific notation, a number is expressed as a product of a decimal number between 1 and 10 and a power of 10. In this case, 53600000 can be written as 5.36 multiplied by 10 raised to the power of 7. This notation is commonly used to represent very large or very small numbers in a concise and standardized format.

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Janaisa Harris |BA-Mathematics |
Mathematics Expert
Ms. Janaisa Harris, an experienced educator, has devoted 4 years to teaching high school math and 6 years to tutoring. She holds a degree in Mathematics (Secondary Education, and Teaching) from the University of North Carolina at Greensboro and is currently employed at Wilson County School (NC) as a mathematics teacher. She is now broadening her educational impact by engaging in curriculum mapping for her county. This endeavor enriches her understanding of educational strategies and their implementation. With a strong commitment to quality education, she actively participates in the review process of educational quizzes, ensuring accuracy and relevance to the curriculum.

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• Current Version
• Mar 01, 2024
Quiz Edited by
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Expert Reviewed by
Janaisa Harris
• Mar 11, 2015
Quiz Created by
Katimars77