**(1)** If \(0.75\) is expressed as a fraction, what is its simplest form?

- (a) \( \frac{15}{20} \)
- (b) \( \frac{3}{4} \)
- (c) \( \frac{75}{100} \)
- (d) \( \frac{7}{10} \)

**(2)** What is the value of \(0.125 \times 100\) in percentage?

- (a) 12.5\%
- (b) 125\%
- (c) 1.25\%
- (d) 0.125\%

**(3)** Round the decimal \(0.8391\) to the nearest hundredth.

- (a) 0.84
- (b) 0.83
- (c) 0.839
- (d) 0.80

**(4)** What is \(0.625\) as a fraction in its simplest form?

- (a) \(\frac{5}{8}\)
- (b) \(\frac{25}{40}\)
- (c) \(\frac{62}{100}\)
- (d) \(\frac{6}{10}\)

**(5)** If you increase \(0.4\) by \(25\%\), what is the result?

- (a) 0.5
- (b) 0.45
- (c) 0.3
- (d) 0.475