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Evaluate 2.5 / .0005

  • 5000
  • 500
  • 50000
  • 50

Answer: Option A

Explanation:

2.5 * 10000 / 5 = 25000/5 = 5000

Similar Questions :

1. What decimal of an hour is a second

  • .0028
  • .0027
  • .0026
  • .0025

Answer: Option B

Explanation:

1/(60*60) = 1/3600 = .0027

2. Evaluate
\begin{aligned} \frac{10.3 \times 10.3 \times 10.3 + 1}{10.3 \times 10.3 - 10.3 + 1}
\end{aligned}

  • 113
  • 1.13
  • 11.3
  • 113

Answer: Option C

Explanation:

\begin{aligned}
a^3 + b^3 = (a+b)(a^2 + b^2 - ab)
\end{aligned}

\begin{aligned}
= \frac{10.3^3 + 1^3}
{10.3^2 + 1^2 - 10.3 \times 1}
\end{aligned}

\begin{aligned}
= (a+b) = (10.3+1) = 11.3
\end{aligned}

3. Correct expression of \begin{aligned}
6.\overline{46}
\end{aligned} is

  • \begin{aligned} \frac{640}{99} \end{aligned}
  • \begin{aligned} \frac{640}{90} \end{aligned}
  • \begin{aligned} \frac{64000}{99} \end{aligned}
  • \begin{aligned} \frac{640}{9} \end{aligned}

Answer: Option A

Explanation:

\begin{aligned}
6.\overline{46} = 6 + 0.\overline{46}
= 6 + \frac{46}{99}
= 6\frac{46}{99} = \frac{640}{99}
\end{aligned}

4. What is difference between biggest and smallest fraction among 2/3, 3/4, 4/5 and 5/6

  • 2/5
  • 3/5
  • 1/6
  • 1/7

Answer: Option C

Explanation:

2/3 = .66, 3/4 = .75, 4/5 = .8 and 5/6 = .833

So biggest is 5/6 and smallest is 2/3

Their difference is 5/6 - 2/3 = 1/6

5. 792.02 + 101.32 - 206.76

  • 676.58
  • 687.58
  • 686.58
  • 586.58

Answer: Option C

Read more from - Decimal Fraction Questions Answers