ICAS Measurement and Geometry

Question 1

A rectangle is 8 cm long and 5 cm wide. What is its area?

Accepted Answer

40 cm²

Answer

The area of a rectangle is length × width. 8 cm × 5 cm = 40 cm². 26 cm is the perimeter, not the area.

Question 2

What do the three interior angles of any triangle add up to?

Accepted Answer

180°

Answer

The interior angles of every triangle add up to 180°. 360° is the total for a quadrilateral.

Question 3

How many lines of symmetry does a square have?

Accepted Answer

4

Answer

A square has 4 lines of symmetry: 2 through the midpoints of opposite sides and 2 along the diagonals.

Question 4

A cube has edges that are 3 cm long. What is its volume?

Accepted Answer

27 cm³

Answer

The volume of a cube is edge × edge × edge. 3 × 3 × 3 = 27 cm³. 54 cm² is the surface area.

Question 5

How many metres are in 2.5 kilometres?

Accepted Answer

2500 m

Answer

There are 1000 metres in 1 kilometre, so 2.5 × 1000 = 2500 m.

(ICAS) ICAS Practice Test