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Question Detail
Evaluate
\begin{aligned}
3.\overline{14}
\end{aligned}
- \begin{aligned} 3\frac{14}{99} \end{aligned}
- \begin{aligned} \frac{14}{99} \end{aligned}
- \begin{aligned} 3\frac{14}{90} \end{aligned}
- \begin{aligned} 3\frac{1400}{99} \end{aligned}
Answer: Option A
Explanation:
when there is bar above a number, we can simplify it by dividing with 9's (equal to the number below bar, in this question 2 digits are below bar)
1. Arrange the fractions in ascending order
- 5/8 < 7/12 < 3/4< 13/16
- 5/8 < 7/12 < 13/16 < 3/4
- 5/8 < 3/4< 13/16 < 7/12
- 7/12 < 5/8 < 3/4< 13/16
Answer: Option D
Explanation:
5/8 = .625, 7/12 = .5833, 3/4 = .75, 13/16 = .8125
So order will be
7/12 < 5/8 < 3/4< 13/16
2. Evaluate
\begin{aligned}
\frac{2.39^2 - 1.61^2}{2.39 - 1.61}
\end{aligned}
- 2
- 3
- 4
- 5
Answer: Option C
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
3. If 144/0.144 = 14.4/x, then x = ?
- 0.144
- 0.0144
- .00144
- 1.44
Answer: Option B
4. Evaluate 2.5 / .0005
- 5000
- 500
- 50000
- 50
Answer: Option A
Explanation:
2.5 * 10000 / 5 = 25000/5 = 5000
5. 1/0.04 is equal to
- 25.5
- 2.5
- 25
- .25
Answer: Option C
Explanation:
1/0.04 = (1 * 100)/4 = 100/4 = 25
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