Discussion
Home ‣ Aptitude ‣ Decimal Fraction Comments
- Question
.009 = .01 ?
Options- A. .0009
- B. .09
- C. .9
- D. 9
- Correct Answer
- .9
ExplanationLet .009 = .01; Then x = .009 = .9 = .9 x .01 1 - 1. 0.04 x 0.0162 is equal to:
Options- A. 6.48 x 10-3
- B. 6.48 x 10-4
- C. 6.48 x 10-5
- D. 6.48 x 10-6 Discuss
- 2.
Which of the following fractions is greater than 3 and less than 5 ? 4 6
Options- A.
1 2 - B.
2 3 - C.
4 5 - D.
9 10
Discuss
- 3. The correct expression of 6.46 in the fractional form is:
Options- A.
646 99 - B.
64640 1000 - C.
640 100 - D.
640 99
Discuss
- 4.
(0.1667)(0.8333)(0.3333) is approximately equal to: (0.2222)(0.6667)(0.1250)
Options- A. 2
- B. 2.40
- C. 2.43
- D. 2.50 Discuss
- 5. 0.002 x 0.5 =?
Options- A. 0.0001
- B. 0.001
- C. 0.01
- D. 0.1 Discuss
- 6. 3.87 - 2.59 =?
Options- A. 1.20
- B. 1.2
- C. 1.27
- D. 1.28 Discuss
- 7. Which of the following are in descending order of their value?
Options- A.
1 , 2 , 3 , 4 , 5 , 6 3 5 7 5 6 7 - B.
1 , 2 , 3 , 4 , 5 , 6 3 5 5 7 6 7 - C.
1 , 2 , 3 , 4 , 5 , 6 3 5 5 6 7 7 - D.
6 , 5 , 4 , 3 , 2 , 1 7 6 5 7 5 3
Discuss
- 8. The rational number for recurring decimal 0.125125.... is:
Options- A.
63 487 - B.
119 993 - C.
125 999 - D. None of these Discuss
- 9.
4.2 x 4.2 - 1.9 x 1.9 is equal to: 2.3 x 6.1
Options- A. 0.5
- B. 1.0
- C. 20
- D. 22 Discuss
- 10. The price of commodity X increases by 40 paise every year, while the price of commodity Y increases by 15 paise every year. If in 2001, the price of commodity X was Rs. 4.20 and that of Y was Rs. 6.30, in which year commodity X will cost 40 paise more than the commodity Y?
Options- A. 2010
- B. 2011
- C. 2012
- D. 2013 Discuss
Decimal Fraction problems
Search Results
Correct Answer: 6.48 x 10-4
Explanation:
4 x 162 = 648. Sum of decimal places = 6.
So, 0.04 x 0.0162 = 0.000648 = 6.48 x 10 -4
So, 0.04 x 0.0162 = 0.000648 = 6.48 x 10 -4
Correct Answer:
| 4 |
| 5 |
Explanation:
| 3 | = 0.75, | 5 | = 0.833, | 1 | = 0.5, | 2 | = 0.66, | 4 | = 0.8, | 9 | = 0.9. |
| 4 | 6 | 2 | 3 | 5 | 10 |
Clearly, 0.8 lies between 0.75 and 0.833.
| ∴ | 4 | lies between | 3 | and | 5 | . |
| 5 | 4 | 6 |
Correct Answer:
| 640 |
| 99 |
Explanation:
| 6.46 = 6 + 0.46 = 6 + | 46 | = | 594 + 46 | = | 640 | . |
| 99 | 99 | 99 |
Correct Answer: 2.50
Explanation:
| Given expression |
|
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|
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| = 2.50 |
Correct Answer: 0.001
Explanation:
2 x 5 = 10.
Sum of decimal places = 4
∴ 0.002 x 0.5 = 0.001
Correct Answer: 1.28
Explanation:
3.87 - 2.59 = (3 + 0.87) - (2 + 0.59)
| = | ❨ | 3 + | 87 | ❩ | - | ❨ | 2 + | 59 | ❩ |
| 99 | 99 |
| = 1 + | ❨ | 87 | - | 59 | ❩ |
| 99 | 99 |
| = 1 + | 28 |
| 99 |
= 1.28.
Correct Answer:
| 6 | , | 5 | , | 4 | , | 3 | , | 2 | , | 1 |
| 7 | 6 | 5 | 7 | 5 | 3 |
Correct Answer:
| 125 |
| 999 |
Explanation:
| 0.125125... = 0.125 = | 125 |
| 999 |
Correct Answer: 1.0
Explanation:
| Given Expression = | (a2 - b2) | = | (a2 - b2) | = 1. |
| (a + b)(a - b) | (a2 - b2) |
Correct Answer: 2011
Explanation:
Suppose commodity X will cost 40 paise more than Y after z years.
Then, (4.20 + 0.40z) - (6.30 + 0.15z) = 0.40
⟹ 0.25z = 0.40 + 2.10
| ⟹ z = | 2.50 | = | 250 | = 10. |
| 0.25 | 25 |
∴ X will cost 40 paise more than Y 10 years after 2001 i.e., 2011.
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