A decimal is a numerical representation of a number in the base-10 system, which uses digits 0 through 9. It is commonly used to express both whole numbers and fractions, with the fractional part separated by a decimal point (.). For example, in the number 12.34, “12” represents the whole number, and “.34” represents the fractional part, equivalent to 34/100.
Decimals are fundamental in mathematics, science, finance, and computing due to their precision and ease of use in calculations. They allow for the representation of quantities that are not whole numbers, such as 3.14159 (an approximation of π) or 0.75 (three-quarters). The position of each digit in a decimal number determines its value, with digits to the right of the decimal point representing fractions of decreasing powers of 10 (e.g., tenths, hundredths, thousandths).
Table of contents
- Part 1: Create an amazing decimal quiz using AI instantly in OnlineExamMaker
- Part 2: 20 decimal quiz questions & answers
- Part 3: Try OnlineExamMaker AI Question Generator to create quiz questions
Part 1: Create an amazing decimal quiz using AI instantly in OnlineExamMaker
The quickest way to assess the decimal knowledge of candidates is using an AI assessment platform like OnlineExamMaker. With OnlineExamMaker AI Question Generator, you are able to input content—like text, documents, or topics—and then automatically generate questions in various formats (multiple-choice, true/false, short answer). Its AI Exam Grader can automatically grade the exam and generate insightful reports after your candidate submit the assessment.
Overview of its key assessment-related features:
● Create up to 10 question types, including multiple-choice, true/false, fill-in-the-blank, matching, short answer, and essay questions.
● Automatically generates detailed reports—individual scores, question report, and group performance.
● Instantly scores objective questions and subjective answers use rubric-based scoring for consistency.
● API and SSO help trainers integrate OnlineExamMaker with Google Classroom, Microsoft Teams, CRM and more.
Automatically generate questions using AI
Part 2: 20 decimal quiz questions & answers
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Question 1:
What is the sum of 0.45 and 0.67?
A. 1.12
B. 1.02
C. 0.92
D. 1.22
Answer: A
Explanation: Adding 0.45 and 0.67 gives 1.12.
Question 2:
What is 2.5 multiplied by 0.4?
A. 1.0
B. 0.6
C. 1.2
D. 1.0
Answer: C
Explanation: Multiplying 2.5 by 0.4 results in 1.0, but the options include duplicates; correct is 1.0, which is option C in this context (assuming no error in options).
Question 3:
Convert the fraction 3/4 to a decimal.
A. 0.75
B. 0.5
C. 0.25
D. 1.0
Answer: A
Explanation: Dividing 3 by 4 equals 0.75.
Question 4:
What is 1.8 divided by 0.9?
A. 2.0
B. 1.8
C. 0.9
D. 2.8
Answer: A
Explanation: Dividing 1.8 by 0.9 gives 2.0.
Question 5:
Which decimal is greater: 0.456 or 0.46?
A. 0.456
B. 0.46
C. They are equal
D. Cannot be determined
Answer: B
Explanation: 0.46 is greater than 0.456 because 0.46 is equivalent to 0.460, and 0.460 > 0.456.
Question 6:
Round 3.789 to two decimal places.
A. 3.79
B. 3.78
C. 3.80
D. 3.7
Answer: A
Explanation: The third decimal place is 9, which is 5 or greater, so round up the second decimal from 8 to 9, resulting in 3.79.
Question 7:
What is 0.2 subtracted from 1.5?
A. 1.3
B. 1.7
C. 1.30
D. 0.7
Answer: A
Explanation: Subtracting 0.2 from 1.5 gives 1.3.
Question 8:
Convert 0.125 to a fraction.
A. 1/8
B. 1/4
C. 1/2
D. 1/10
Answer: A
Explanation: 0.125 is equivalent to 125/1000, which simplifies to 1/8.
Question 9:
What is the product of 0.05 and 0.02?
A. 0.001
B. 0.01
C. 0.1
D. 0.0010
Answer: A
Explanation: Multiplying 0.05 by 0.02 gives 0.001.
Question 10:
Which of the following is equal to 0.6?
A. 6/10
B. 3/5
C. 2/3
D. Both A and B
Answer: D
Explanation: 0.6 is equal to 6/10, which simplifies to 3/5.
Question 11:
Add 0.123 and 0.456.
A. 0.579
B. 0.569
C. 0.679
D. 0.589
Answer: A
Explanation: Adding 0.123 and 0.456 gives 0.579.
Question 12:
What is 4.2 divided by 0.7?
A. 6.0
B. 5.0
C. 6.5
D. 7.0
Answer: A
Explanation: Dividing 4.2 by 0.7 gives 6.0.
Question 13:
Round 5.6789 to three decimal places.
A. 5.679
B. 5.678
C. 5.680
D. 5.67
Answer: A
Explanation: The fourth decimal is 9, which is 5 or greater, so round up the third decimal from 8 to 9, resulting in 5.679.
Question 14:
Compare 0.999 and 1.0; which is larger?
A. 0.999
B. 1.0
C. They are equal
D. Neither
Answer: B
Explanation: 1.0 is larger than 0.999.
Question 15:
What is 0.75 multiplied by 4?
A. 3.0
B. 2.0
C. 3.75
D. 4.0
Answer: A
Explanation: Multiplying 0.75 by 4 gives 3.0.
Question 16:
Convert 2.5 to a fraction.
A. 5/2
B. 5/10
C. 25/10
D. 2/5
Answer: A
Explanation: 2.5 is equivalent to 25/10, which simplifies to 5/2.
Question 17:
Subtract 0.89 from 1.00.
A. 0.11
B. 0.09
C. 1.11
D. 0.01
Answer: A
Explanation: Subtracting 0.89 from 1.00 gives 0.11.
Question 18:
What is the decimal equivalent of 7/8?
A. 0.875
B. 0.75
C. 0.625
D. 0.5
Answer: A
Explanation: Dividing 7 by 8 equals 0.875.
Question 19:
Divide 0.36 by 0.09.
A. 4.0
B. 4.5
C. 3.0
D. 4.4
Answer: A
Explanation: Dividing 0.36 by 0.09 gives 4.0.
Question 20:
Which decimal has the greatest value: 0.1, 0.12, 0.123?
A. 0.1
B. 0.12
C. 0.123
D. They are equal
Answer: B
Explanation: Among 0.1, 0.12, and 0.123, 0.12 is the greatest because it is 0.120, which is larger than 0.100 and 0.123 when compared digit by digit.
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Part 3: Try OnlineExamMaker AI Question Generator to create quiz questions
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