Decimal Fraction – Aptitude Questions and Answers | Latest Online Decimal Fraction MCQ Aptitude Test
Decimal Fraction – Aptitude Questions and Answers | Online Decimal Fraction MCQ Aptitude Test Quiz Name Decimal Fraction Category Online Aptitude Test Number of Questions 30... explore below more
Decimal Fraction – Aptitude Questions and Answers | Online Decimal Fraction MCQ Aptitude Test
Quiz Name
Decimal Fraction
Category
Online Aptitude Test
Number of Questions
30
Time
30 Minutes
Exam Type
MCQ (Multiple Choice Questions)
1. Calculate the following: (2.39)2 – (1.61)2/2.39 – 1.61 a. 2 b. 4 c. 6 d. 8
Answer: B
Explanation: (a + b)(a – b)/(a – b) = (a + b) = (2.39 + 1.61) = 4. Given Expression = a2 – b2/a – b = (a + b)(a – b)/(a – b) = (a + b)
2. What is the decimal equivalent of a second in an hour? a. 0.0025 b. 0.0256 c. 0.00027 d. 0.000126
Answer: C
Explanation: 1/60 x 60 = 1/3600 =.00027 is the required decimal.
3. (0.96)3 – (0.1)3 = (0.96)2 + 0.096 + (0.1) 2 a. 0.86 b. 0.95 c. 0.97 d. 1.06
Answer: A
Explanation: Given formula = (0.96),a) (0.1),3/(0.96),(0.96 x 0.1) + 2 + (0.1)2,(a – b) = (0.96 – 0.1) = 0.86 .
4. The value of 0.1 x 0.1 x 0.1 + 0.02 x 0.02 x 0.02/0.2 x 0.2 x 0.2 + 0.04 x 0.04 x 0.04/0.2 x 0.2 x 0.2 + 0.04 x 0.04 x 0.04 is: a. 0.0125 b. 0.125 c. 0.25 d. 0.5
5. If 2994 14.5 = 172, what is 29.94 1.45? a. 0.172 b. 1.72 c. 17.2 d. 172
Answer: C
Explanation: 29.94/1.45 = 299.4/14.5= 2994/14.5 x 1/10 [ In this case, replace 172 with 172.= 172/10=17.2 %
6. When 0.232323….. is divided into fractions, the following is the result: a. 1/5 b. 2/9 c. 23/99 d.23/100
Answer: C
Explanation: 23/99 = 0.232323… = 0.23
7. 0.009 =.0001? a. .0009 b. .09 c. .9 d. 9
Answer: C
Explanation: Let’s say.009/x =.01; therefore x =.009/.01 =.9/1 =.9
8. For x equal to: (11.98 x 11.98 + 11.98 x x + 0.02 x 0.02), the equation (11.98 x 11.98 + 11.98 x x + 0.02 x 0.02) will be a perfect square. a. 0.02 b. 0.2 c. 0.04 d. 0.4
Answer: C
Explanation: (11.98)2 + (0.02)2 + 11.98 x x is the given equation.We must have in order for the provided statement to be a perfect square.x = 0.04 or 11.98 x x = 2 x 11.98 x 0.02.
9. (0.1667)(0.8333)(0.3333)/(0.2222)(0.6667)(0.1250) =? a. 2 b. 2.40 c. 2.43 d. 2.50
Answer: D
Explanation: (0.3333) /(0.2222) x (0.1667)(0.8333)/(0.6667) (0.1250),3/2 x 1/6 x 5/6 /2/3 x 125/1900 = 3/2 x 1/6 x 5/6 x 3/2 x 8 = 5/2 = 2.50.
10. 3854.002 = 10.3889 + 12.952 -? a. 47.095 b. 47.752 c. 47.932 d. 47.95
Answer: D
Explanation: Let x = 3854.002 and 3889 + 12.952 = 3854.002.Then x = (3889 + 12.952) – 3854.002 is the solution.= 3854.002 – 3901.952=(47.95).
11. The product of 11. 0.04 x 0.0162 is: a. 6.48 x 10-3 b. 6.48 x 10-4 c. 6.48 x 10-5 d. 6.48 x 10-6
Answer: B
Explanation: 648 = 4 x 162. The total number of decimal places is 6.As a result, 0.04 x 0.0162 = 0.000648 = 6.48 x 10-4 is calculated.
12. 4.2 × 4.2 – 1.9 x 1.9=2.3 x 6.1 x 6.3 x 6.3 x 6.1 a. 0.5 b. 1.0 c. 20 d. 22
13. If 144/0.144 = 14.4/x, what is the value of x? a. 0.0144 b. 1.44 c. 14.4 d. 144
Answer: A
Explanation: 144/0.144=14.4/x =144 x 1000/144 x=14.4 =x =14.4/1000=0.0144 =x =14.4/1000=0.0144
14. Every year, the price of commodity X grows by 40 paise, whereas the price of commodity Y increases by 15 paise. If the price of commodity X was Rs. 4.20 in 2001 and the price of commodity Y was Rs. 6.30 in 2001, in which year would commodity X cost 40 paise higher than commodity Y? a. 2010 b. 2011 c. 2012 d. 2013
Answer: B
Explanation: Assume that after z years, commodity X will cost 40 paise more than commodity Y.The result is that (4.20 + 0.40z) – (6.30 + 0.15z) = 0.40.0.25z is equal to 0.40 + 2.10.2.50/0.25 = 250/25 = 10.After ten years, in 2011, X will cost 40 pence more than Y.
15. Which of the following is in order of decreasing value? a. 1/3 , 2/5 , 3/7 , 4/5 , 5/6 , 6/7 b. 1/3 , 2/5 , 3/5, 4/7 , 5/6 , 6/7 c. 1/3, 2/5 , 3/5 , 4 /6, 5/7 , 6/7 d. 6/7 , 5/6 , 4/5 , 3/7 , 2/5 , 1/3
Answer: D
Explanation: There is no answer description for this question.
16. Which fraction is bigger than 3/4 and less than 5/6? a. 1/2 b. 2/3 c. 4/5 d. 9/10
Answer: C
Explanation: 3/4 = 0.75, 5/6 = 0.833, 1/2 = 0.5, 2/3 = 0.66, 4/5 = 0.8, 9/10 = 0.9, 3/4 = 0.75, 5/6 = 0.833, 1/2 = 0.5, 2/3 = 0.66, 4/5 = 0.8, 9/10 = 0.9,0.8 is clearly between 0.75 and 0.833.Between 3/4 and 5/6 is 4/5.
17. For the decimal 0.125125…., the rational number is: a. 63/487 b. 119/993 c. 125/999 d. None of these
19. The value of 489.1375 x 0.0483 x 1.956/0.0873 x 92.581 x 99.749 is the most similar to: a. 0.006 b. 0.06 c. 0.6 d. 6
Answer: B
Explanation: 489 x 0.05 x 2/0.09 x 93 x 100 = 489/9 x 93 x 10 = 489.1375 x 0.0483 x 1.956/0.0873 x 92.581 x 99.749 = 489 x 0.05 x 2/0.09 x 93 x 100 = 489/9 x 93 x 10= 163/279 x 1/10= 0.58/10=0.06 = 0.058.
20. 0.002 x 0.5 =? 20. 0.002 x 0.5 =? a. 0.0001 b. 0.001 c. 0.01 d. 0.1
Answer: B
Explanation: 2 multiplied by 5 equals ten.4 decimal places in total,0.002 multiplied by 0.5 is 0.001.
21. 240.016 + 23.98 =? 21. 34.95 + 240.016 + 23.98 =? a. 298.0946 b. 298.111 c. 298.946 d. 299.09
22. 3.14 x 106 is equivalent to which of the following? a. 314 b. 3140 c. 3140000 d. None of these
Answer: C
Explanation: 3.14 x 106 = 3.14 x 1000000 = 3140000
23. Which of the following is the least important? a. 0.2 b. 1 ÷ 0.2 c. 0.2 d. (0.2)
Answer: D
Explanation: 0.2 2 0.2 = 0.222…; 1 0.2 = 1 = 10 = 5; 0.2 2 0.2 = 0.222…0.04 = (0.2)2.0.04, 0.2, 0.22, and so on….Because 0.04 is the smallest, (0.2)2 is the smallest.
24. 2 x 1.4/1.3 + 24. 5 x 1.6 =? a. 0.4 b. 1.2 c. 1.4 d. 4
Answer: D
Explanation: 8 – 2.8/1.3 = 5.2/1.3 = 52/1.3= 4
25. In the product of 95.75 and.02554, how many digits will be to the right of the decimal point? a. 5 b. 6 c. 7 d. None of these
Answer: B
Explanation: The total number of decimal places is 7.There will be 6 significant digits to the right of the decimal point since the last digit to the extreme right will be zero (because 5 x 4 = 20).
26. In fractional form, the correct equation for 6.46 is: a. 646/99 b. 64640/1000 c. 640/100 d. 640/99
