Section B: Short-answer Questions (15 marks)

Questions 11 to 15 carry 1 mark each. Questions 16 to 20 carry 2 marks each.

Show your workings clearly in the space below each question and write your answers in the spaces provided. For questions which require units, give your answers in the units stated.

11. Subtract [tex][tex]$\frac{1}{8}$[/tex][/tex] from 4.

Express your answer as an improper fraction.

[tex]\[
\begin{array}{l}
4 - \frac{1}{8} \\
= \frac{32}{8} - \frac{1}{8} \\
= \frac{31}{8} \\
\end{array}
\][/tex]

Ans: [tex]\frac{31}{8}[/tex]



Answer :

Let's find the result of subtracting [tex]\(\frac{1}{8}\)[/tex] from 4 and express it as an improper fraction.

1. First, we express 4 as a fraction with a denominator of 8:
[tex]\[ 4 = \frac{4 \times 8}{8} = \frac{32}{8} \][/tex]

2. Subtract [tex]\(\frac{1}{8}\)[/tex] from [tex]\(\frac{32}{8}\)[/tex]:
[tex]\[ \frac{32}{8} - \frac{1}{8} = \frac{32 - 1}{8} = \frac{31}{8} \][/tex]

Thus, the result of subtracting [tex]\(\frac{1}{8}\)[/tex] from 4 is:

[tex]\[ \boxed{\frac{31}{8}} \][/tex]