Question

Subtract:
25 hectometre - 12 decimetre

• A. Metric System
• B. 13 decametre
• C. 249.88 decametre
• D. 238 decimetre

Answer 1

Answer: (A), (C)

The correct options are
A Metric System
C

249.88 decametre

We know that 1 hectometre = 100 m
So, 25 hectometer = 25 x 100 m = 2500 m
Also, 10 decimetre = 1 m
so, 1 decimetre = $\frac{1}{10}$ m
$\therefore$ 12 decimetre = $\frac{12}{10}$ m = 1.2 m

$\therefore$ 25 hectometre - 12 decimetre = (2500 - 1.2) m = 2498.8 m

Also, 10 m = 1 decametre
$\to$ 1 m = $\frac{1}{10}$ decametre
$\to$ 2498.8 m = $\frac{2498.8}{10}$ decametre = 249.88 decametre