## Length Exercise

1. Which units would you use to measure the following lengths? a. The width of a netball courtb. The distance between two islandsc. The length of a card. The width of a light bulb

2. a. Draw a square with sides of 4 cm and measure, to the nearest millimetre, with a ruler, the length of the diagonal.

b. Draw a right-angled triangle with the two sides making the right angle being 3 cm and 4 cm and measure the length of the other side. Give the answer in cm, to one decimal place.

c. Draw a rectangle with one side 5 cm and one side 6 cm and measure the length of the diagonal to the nearest millimetre.

3. Match up the following objects with the list of likely lengths:

 (i) The width of a laptop computer a. 195 cm (ii) The height of a tennis player b. 2.1 m (iii) The length of a snowboard c. 120 mm (iv) The length of a calculator d. 30 cm (v) The thickness of a paperback book e. 30 m (vi) The length of a space rocket f. 12 mm

4. Complete this table:

 mm cm m km 590 1.4 2.3

5. Calculate and leave the answers in metres:

a. 3 km + 4 km
b. 6 km + 349 m
c. 3 m + 932 cm
d. 639 cm + 493 cm + 92 cm
e. 2 km − 550 m
f. 45 cm + 0.5 m − 95 mm

6. Convert each of the following measurements to the units given in brackets

 a. 5 mm (cm) b. 4 km (m) c. 1200 mm (m) d. 2.3 cm (mm) e. 234 mm (m) f. 1.4 km (cm) g. 440 m (km) h. 120 m (cm) i. 324 mm (cm) j. 3.9 km (mm)