**Question 1 (a)**:

Fill in the blanks.

(i) 3.5 cm = ______ mm

(ii) 6 500 m

*l*= ______

*l*

(iii) 90 minutes = ______ hour

**Solution**:**(i)**

$3.5\text{cm}=3.\underset{\u2323}{5}=\underset{\_}{35}\text{mm}$

**(ii)**

$6500\text{}ml\text{}=6\underset{\u2323}{5}\underset{\u2323}{0}\underset{\u2323}{0}=\underset{\_}{6.5}\text{}l$

**(iii)**

$90\text{minutes}=\frac{90}{60}=1.5\text{hour}$

**Question 1 (b)**:

(i) Using a ruler, draw an axis of symmetry on diagram 1.1.

(ii) Diagram 1.2 shows an incomplete polygon drawn on a square grid. The dotted line is the axis of symmetry.

Complete the polygon in the answer space.

Answer:

**Solution**:**(i)**

**(ii)**

**Question 1 (c)**:

Diagram 1.3 is an incomplete line graph showing the number of laptops sold in five days. The sales on Friday was ¾ of the total sales on Thursday.

(a) Complete the line graph in the Diagram 1.3.

(b) Find the difference in the number of laptops sold between Thursday and Monday.

**Solution**:**(i)**

$\begin{array}{l}\text{SalesonFriday}\\ =\frac{3}{4}\times 36\\ =27\end{array}$

**(ii)**

Difference in the number of laptops sold

= 36 – 24

= 12