CAEC Mathematics with a Calculator 3

Question 1

A worker earns $22.50 per hour and works 37.5 hours per week. What are the worker's weekly gross earnings?

Accepted Answer

$843.75

Answer

Weekly earnings = $22.50 × 37.5 = $843.75.

Question 2

The temperature dropped from 4°C to −11°C overnight. By how many degrees did the temperature drop?

Accepted Answer

15°C

Answer

Temperature change = 4°C − (−11°C) = 4 + 11 = 15°C.

Question 3

A container holds 3.75 litres of juice. If 6 people share it equally, approximately how much does each person receive?

Accepted Answer

0.63 L

Answer

Amount per person = 3.75 ÷ 6 = 0.625 L ≈ 0.63 L.

Question 4

A room is 6.4 m long and 4.5 m wide. What is the perimeter of the room?

Accepted Answer

21.8 m

Answer

Perimeter = 2 × (length + width) = 2 × (6.4 + 4.5) = 2 × 10.9 = 21.8 m.

Question 5

If a train travels at an average speed of 95 km/h, how long will it take to travel 380 km?

Accepted Answer

4 hours

Answer

Time = Distance ÷ Speed = 380 ÷ 95 = 4 hours.

(CAEC) Canadian Adult Education Credential Practice Test