Decimal Fraction Questions Answers

• 8. 0.5 * 0.002 = ?

  1. 0.0001
  2. 0.01
  3. 0.1
  4. 0.001

  Answer :

  Option D

• 9. Evaluate
  \begin{aligned}
  \frac{2.39^2 - 1.61^2}{2.39 - 1.61}
  \end{aligned}

  1. 2
  2. 3
  3. 4
  4. 5
  5. 216 crores
  6. 316 crores
  7. 416 crores
  8. 516 crores

  Answer :

  Option F

  Explanation:

  Use following formula to solve it quickly
  \begin{aligned}
  \frac{a^2-b^2}{a-b}=\frac{(a+b)(a-b)}{(a-b)} = (a+b)
  \end{aligned}
  = (2.39+1.61) = 4

• 10. Find the value of X
  3889 + 12.952 - X = 3854.002
  

  1. 47.95
  2. 44.95
  3. 43.95
  4. 40.95

  Answer :

  Option A

• 11. \begin{aligned}
  (0.34\overline{67} + 0.13\overline{33}) = ?
  \end{aligned}

  1. \begin{aligned} 0.048\overline{01} \end{aligned}
  2. \begin{aligned} 4.8\overline{01} \end{aligned}
  3. \begin{aligned} 48.\overline{01} \end{aligned}
  4. \begin{aligned} 0.48\overline{01} \end{aligned}

  Answer :

  Option D

  Explanation:

  \begin{aligned}
  (0.34\overline{67} + 0.13\overline{33})\end{aligned}
  \begin{aligned} =
  \frac{3467-34}{9900} + \frac{1333-13}{9900}
  \end{aligned}
  \begin{aligned}
  = \frac{3433 + 1320}{9900}
  = \frac{4753}{9900}
  \end{aligned}
  \begin{aligned}
  = \frac{4801 - 48}{9900}
  = 0.48\overline{01}
  \end{aligned}

• 12. Value of
  \begin{aligned}
  0.5\overline{6}
  \end{aligned}

  1. \begin{aligned} \frac{51}{99} \end{aligned}
  2. \begin{aligned} \frac{51}{90} \end{aligned}
  3. \begin{aligned} \frac{51}{9} \end{aligned}
  4. \begin{aligned} \frac{510}{99} \end{aligned}

  Answer :

  Option B

  Explanation:

  \begin{aligned}
  0.5\overline{6} = \frac {56 - 5}{90} = \frac {51}{90}
  \end{aligned}

• 13. Evaluate
  6202.5 + 620.25 + 62.025 + 6.2025 + .62025

  1. 6791.59775
  2. 6891.59775
  3. 6891.59675
  4. 5891.59775

  Answer :

  Option B

  Explanation:

  Just we need to take care to put decimal under decimal, rest add in a simple way

• 14. Evaluate 35 / .07

  1. 400
  2. 500
  3. 505
  4. None of above

  Answer :

  Option B

  Explanation:

  35/.07 = 3500/7 = 500