What is one situation you would use fractionsto espress a number less than one?
Whether fractions work better than decimals or less as well is very much a question of your preference.
When the numerator is less than the denominator. For example 1/2, 3/4, 18/27, ...
The fraction 1/3=0.3333333... In this case it is better to use fractions just like in all cases. There will be no case when decimals will work better than fractions however, if a test says to use decimals; USE THEM!
it would not be a good time to estimate mixed numbers is when both of the fractions are not a mixed number
To add and subtract unlike fractions.
To subtract a mixed number by a mixed number you first need to turn the fractions into improper fractions then you just subtract them as you would with the normal fractions
When you are seeing how many of the pizza has been eaten. I'm serious by the way
Express the mixed fraction as an improper fraction and then proceed as you would with ordinary fractions. If the answer is an improper fraction, then remember to convert to a mixed fraction.
When both of the fractions are not even mixed numbers!
When you are trying to reduce fractions.
you would convert the mixed numbers into fractions where the top number is greater than the bottom number, then multiply both the numerator and the denominator by a number that makes the denominators the same.