Decimals Quiz
Practice quiz on Decimals (Quantitative Aptitude). 10 exam-style questions with explanations.
About This Quiz
Decimals Quiz — Questions with Solutions
All 10 questions from this quiz with the correct answer and explanation. Attempt them yourself first, then open each solution to check your reasoning.
Q1.Find 2.5 + 3.75.
- A.6.35
- B.5.25
- C.6.25
- D.6.15
Show answer
Answer: C. 6.25
2.5 + 3.75 = 6.25.
Q2.Find 10.5 - 4.75.
- A.6.75
- B.5.25
- C.5.75
- D.6.25
Show answer
Answer: C. 5.75
10.5 - 4.75 = 5.75.
Q3.Multiply 0.4 x 0.6.
- A.0.46
- B.2.4
- C.0.024
- D.0.24
Show answer
Answer: D. 0.24
4 x 6 = 24 with two decimal places.
Q4.Divide 4.5 by 0.5.
- A.90
- B.9
- C.0.9
- D.4.0
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Answer: B. 9
4.5 / 0.5 = 9.
Q5.Express 0.375 as a fraction.
- A.5/8
- B.1/3
- C.3/8
- D.3/5
Show answer
Answer: C. 3/8
375/1000 = 3/8.
Q6.Round 12.678 to one decimal place.
- A.12.6
- B.13.0
- C.12.8
- D.12.7
Show answer
Answer: D. 12.7
The next digit is 7.
Q7.Which is greater: 0.5 or 0.45?
- A.Cannot say
- B.0.45
- C.Equal
- D.0.5
Show answer
Answer: D. 0.5
0.50 > 0.45.
Q8.Find 1.2 x 1.2.
- A.14.4
- B.1.44
- C.1.22
- D.2.4
Show answer
Answer: B. 1.44
12 x 12 = 144.
Q9.The decimal form of 1/8 is
- A.0.125
- B.0.8
- C.0.18
- D.0.25
Show answer
Answer: A. 0.125
1/8 = 0.125.
Q10.Find 5 - 0.05.
- A.5.05
- B.4.95
- C.4.05
- D.4.5
Show answer
Answer: B. 4.95
5 - 0.05 = 4.95.
Frequently Asked Questions
Is Decimals Quiz free to attempt on AajExam?
Yes. Decimals Quiz is completely free. You only need a free AajExam account to track your score, view detailed solutions and unlock cross-attempt analytics.
How long does it take to complete Decimals Quiz?
Decimals Quiz runs on a 10-minute timer in real exam-style conditions. The clock starts the moment you click Start, mirroring the time pressure of the actual exam.
Are detailed solutions provided?
Yes. Every question on Decimals Quiz ships with a complete step-by-step solution, the underlying concept, and (where applicable) shortcut tricks. You can also discuss any question with the AajExam community.
Can I attempt Decimals Quiz multiple times?
Yes. You can attempt this quiz as many times as you like. Each attempt is recorded separately so you can track improvement in score, accuracy and time-management.
Which government exams does this quiz prepare me for?
Decimals & Fractions questions appear regularly in SSC CGL, CHSL, MTS, GD; IBPS PO, Clerk; SBI PO, Clerk; RRB NTPC, Group D; UPSC prelims and most State PSC exams. The specific weightage varies by exam — check the exam pattern on the corresponding AajExam exam page for details.