Year 8 Maths Notes - Measurement

Convert the following units of length. a) 3 km = _______ m

• 3000 m

• 300 m

• 30 m

• 30000 m

Convert the following units of length. b) 4 m = _______ cm

• 400 cm

• 40 cm

• 4 cm

• 0.4 cm

Convert the following units of length. c) 7 cm = _______ mm

• 70 mm

• 700 mm

• 7 mm

• 0.7 mm

Convert the following units of length. d) 6.4 m = _______ mm

• 6400 mm

• 640 mm

• 64 mm

• 64000 mm

Convert the following units of length. e) 68,000 mm = _______ m

• 6.8 m

• 680 m

• 68 m

• 0.68 m

Write the following measurements in ascending order.

• 2 km, 4100 mm, 0.5 m

• 4100 mm, 0.5 m, 2 km

• 0.5 m, 4100 mm, 2 km

• 4100 mm, 2 km, 0.5 m

Joe widens a 1.2 m doorway by 50 mm. What is the new width of the doorway, in centimetres?

• 125 cm

• 127 cm

• 120 cm

• 130 cm

Calculate the perimeter of the following shape. Show all working. [Diagram of shape with dimensions 3m and 6m]

• 18m

• 12m

• 24m

• 9m

Calculate the perimeter of the following shape. Show all working. [Diagram of shape with dimensions 1.2cm, 20mm, and 16mm]

• 3.6 cm

• 5.2 cm

• 5.6 cm

• 6.8 cm

Calculate the perimeter of a rectangle with length 5 cm and width 3 cm.

• 16 cm

• 15 cm

• 18 cm

• 20 cm