Question

Which of the following measurements is the greatest: 24 cm, 24 m, 2400 mm, 240 cm

• A. 24 cm
• B. 24 m
• C. 2400 mm
• D. 240 cm

Answer 1

The correct option is B 24 m

For comparing the measurements, all the measures should be in same units.

Converting measurements into metres:
$24\text{cm}=\frac{24}{100}\text{m}=0.24\text{m}$,
$2400\text{mm}=\frac{2400}{1000}\text{m}=2.4\text{m}$,
$240\text{cm}=\frac{240}{100}\text{m}=2.4\text{m}$

Among 0.24 m, 24 m, 2.4 m, and 2.4 m, the greatest value is 24 m.

Therefore, 24 m, option B is the correct answer.