Question

Find the product of the following.
$6km5hm3dam4mby12$

Answer 1

$1$hecto metre$=0.1$km$\Rightarrow 5$hecto metre$=0.5$km

$1$Deca metre$=0.01$km$\Rightarrow 3$Deca metre$=0.03$km

$1$metre$=0.001$km$\Rightarrow 4$metre$=0.004$km

$\therefore 6$km$+5$hm$+3$dam$+4$m

$=6+0.5+0.03+0.004=6.534$km

Product of $6.534$km and $12$

$=6.534\times 12=78.408$km