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Evaluate
6202.5 + 620.25 + 62.025 + 6.2025 + .62025

  • 6791.59775
  • 6891.59775
  • 6891.59675
  • 5891.59775

Answer: Option B

Explanation:

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

Similar Questions :

1. 0.5 * 0.002 = ?

  • 0.0001
  • 0.01
  • 0.1
  • 0.001

Answer: Option D

2. What will be the value of
\begin{aligned}
25.732^2 - 15.732^2
\end{aligned}

  • 214.64
  • 314.64
  • 414.64
  • 412.64

Answer: Option C

Explanation:

Can be easily solved with following formula
\begin{aligned}
a^2 - b^2 = (a - b)(a + b)
\end{aligned}

3. 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

4. \begin{aligned}
\frac{5 \times 1.6 - 2 \times 1.4}{1.3} = ?
\end{aligned}

  • 1
  • 2
  • 3
  • 4
  • 5

Answer: Option D

Explanation:

As per given equation we can solve like this :

\begin{aligned}
= \frac{8 - 2.8}{1.3} \\
= \frac{5.2}{1.3} = \frac{52}{13} \\
= 4
\end{aligned}

5. Arrange fractions in descending order

  • 9/11 > 8/9 > 3/5 > 4/7
  • 9/11 > 8/9 > 4/7 > 3/5
  • 8/9 > 9/11 > 3/5 > 4/7
  • 9/11 >3/5 > 8/9 > 4/7

Answer: Option C

Explanation:

9/11 = .818 , 8/9 = .88 , 3/5 = .6, 4/7 = .571

So order is 8/9 > 9/11 > 3/5 > 4/7

Read more from - Decimal Fraction Questions Answers
Post a comment

  • Jenaya 12 years ago

    It's always a rleeif when someone with obvious expertise answers. Thanks!

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