Question

convert 842dm into metre​

Answer 1

$\huge\mathfrak\red{Here \: is \: your \: answer}$

Answer,

84.2 m

Solution,

For changing any DM(Deci-meter) into M(Meter).

We use some formulas,

• 1 DM=>1/10

Here we use,

1 DM = \frac{1}{10} \\

842 DM= \frac{842}{10} \\

We put a decimal before the tenth place.

Hence,

By lefting tenth place or "2".

The answer is 84.2

More,

The table of Meter.

• KM(kilo-meter)
• HM(hecta-meter)
• DAM(deca-meter)
• M(meter)
• DM(deci-meter)
• CM(centi-meter)
• MM(milli-meter)

Uses of this table.

• We can use this table to change KM to M,HM to M,CM to MM or many more.

• This table helps us to understand the formulas of KM,HM,DAM,M,DM,CM,MM.

Answer 2

$\huge \mathcal \color{blue} \boxed{\underline{AnsWer :}}$
$\huge \sf 84.2m$

$\huge \mathcal \color{blue} \boxed{\underline{Solution :}}$
we know ,

$\sf \color{red}{\boxed{\sf 10dm = 1m}}$
so,
$\sf \large 842dm = \frac{1}{10} × 842m \\ \\ \large \implies \boxed{84.2m}$