Question

Convert $87g$ and $28mg$ to $kg$.

Answer 1

Step-1: conversion gm into kg:

As we know that

$\begin{array}{rcl}\mathbf{1000}\mathbf{}\mathbf{g}\mathbf{}& \mathbf{=}& \mathbf{}\mathbf{1}\mathbf{}\mathbf{kg}\mathbf{}\\ \mathbf{1000}\mathbf{}\mathbf{mg}& \mathbf{=}& \mathbf{1}\mathbf{}\mathbf{g}\end{array}$

So from the above relation, we can say that

$\begin{array}{rcl}1g& =& 0.001kg\\ 1mg& =& 0.001g\end{array}$

We can write $87g$ in $\text{Kilogram(kg)}$ as

$\begin{array}{rcl}87g& =& 87\times 0.001kg\\ & =& 0.087kg\end{array}$

Step-2: conversion mg into kg:

We can write $28mg$ in $kg$ by converting milligram(mg) into gram(g) followed by converting the evaluated gram(g) into kilogram(kg)

$\begin{array}{rcl}28mg& =& 28\times 0.001g\\ & =& 0.028g\end{array}$

Now we will convert $0.028gintokilogram\left(kg\right)$

$\begin{array}{rcl}0.028g& =& 0.028\times 0.001kg\\ & =& 0.000028kg\end{array}$

Hence ,$\mathbf{\text{87g=0.087kg}}$ and $\mathbf{\text{28 g=0.000028 kg}}$