Question

How do you convert $3.5g$ to $mg$?

Answer 1

Hint: When we are doing these types of questions in which we need to do the conversion of units in another unit then firstly we have to know the relation between the given units with the help of relation we can easily convert the units from one form to another or in the required unit.

Complete step by step Solution:
According to the question we have to change the $3.5g$ into $mg$
First, we need to know the relation between a gram and $mg$
We know that the relation between a gram and $mg$ is
$ \Rightarrow 1$ g $ = 1000$ mg
Now according to the question given that we have to change $3.5$g (gram) into mg
We can write it as $3.5 \times 1$g (gram)
Because we know that we can multiply and divide any number with $1$ because after multiplication and divide of $1$ we will get the same number therefore in the above equation we have multiplied by $1$ and separate $1$g (gram).
Now we know that $1$ g (gram) is equal to $1000$mg
Now we will put the value of $1$ g (gram) in $3.5 \times 1$g (gram)
$ = 3.5 \times 1000mg$
Then after multiplication we will get
$ = 3500mg$

Therefore $3.5$ g (gram) is equal to $3500mg$ which is our required answer.

Note: In these types of questions, we have to find the relation between the units then we can directly convert any unit from one unit to another. We know that we can multiply and divide any number with $1$ because after multiplication and divide of $1$ we will get the same number therefore in the above equation we have multiplied by $1$ and separate $1$ g (gram).