Answer:
18 children out of 100 are girls ->>> 18% of the children are girls
Step-by-step explanation:
percentages are out of 100
so put the number of girls over the total number of children -> 18/100
then to turn the fraction into a percentage just turn into a decimal (by dividing by 100) -> 0.18
then times by 100 -> 18%
if the denominator (number below the fraction is not 100) you will need to multiply by a common factor to get to 100 then you can use the process above.