Mathematical Precision

Question 1

A rectangle is 7 cm long and 9 cm wide. What is its area?

Accepted Answer

63 square centimetres

Answer

63 centimetres

Answer

63

Answer

63 square meters

Question 2

A rectangular garden plot is 70 cm long and 45 cm wide. What is the area of the plot expressed in square metres? Write your answer with the correct unit.

Accepted Answer

0.315 square metres

Answer

315 square centimetres

Answer

315 square metres

Answer

0.315 square centimetres

Question 3

Which answer correctly writes 15:45 in 24‑hour notation and explains how it differs from 3:45 pm?

Accepted Answer

15:45; it is the same time as 3:45 pm but written using the 24‑hour clock, where the hour counts from 0 to 23.

Answer

3:45; it is the same as 3:45 pm, just written in a different way.

Answer

15:45; it shows a different time than 3:45 pm because the hour number is larger.

Answer

03:45; it is the same as 3:45 am, not 3:45 pm.

Try three questions

A rectangle is 7 cm long and 9 cm wide. What is its area?

A rectangular garden plot is 70 cm long and 45 cm wide. What is the area of the plot expressed in square metres? Write your answer with the correct unit.

Which answer correctly writes 15:45 in 24‑hour notation and explains how it differs from 3:45 pm?

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