ACT Math : How to order fractions from least to greatest or from greatest to least

Study concepts, example questions & explanations for ACT Math

varsity tutors app store varsity tutors android store

Example Questions

Example Question #1 : Fractions

Order the following fractions from least to greatest:

2/3, 3/4, 1/2

Possible Answers:

2/3, 3/4, 1/2

3/4, 2/3, 1/2

2/3, 1/2, 3/4

 3/4, 1/2, 2/3

1/2, 2/3, 3/4

Correct answer:

1/2, 2/3, 3/4

Explanation:

1/2 is the least, then 2/3, then 3/4.

Example Question #1 : Fractions

Place the following fractions in order from greatest to least.

Possible Answers:

Correct answer:

Explanation:

This question can be most easily answered by converting the fractions into decimals first.

Example Question #3 : Fractions

Order the following fractions from least to greatest: 

Possible Answers:

Correct answer:

Explanation:

The most generic process of ordering fractions that can apply to all questions begins with finding the common denominator between all fractions, preferably the least common denominator. In this question, the LCD is 40. Therefore the fractions become: . From this point, we can simply arrange the fractions based upon their numerators. This becomes: . The final step is to reduce the fractions to their original denominators, which becomes: .

 

If you are comfortable and competent in quickly converting fractions to decimals, then there is a quicker method than what is described above. Simply convert each fraction to a decimal, organize the decimals, and then convert the decimals back to fractions. In this question we can convert  to . Then we can reorganize this to  and convert back to .

 

When approaching this kind of problem, choose the method in which you are more comfortable working with. There is no sense in trying to save time by choosing a method that you are not comfortable with and increasing your risk of answering the question incorrectly.

Example Question #2 : Fractions

Place the following fractions in increasing order: 

.

Possible Answers:

Correct answer:

Explanation:

To put these fractions in increasing order it is important to compare them as decimals, since fractions can often be deceiving. .

Now that the value of each fraction is obvious we can sort then in increasing order:

Learning Tools by Varsity Tutors

Incompatible Browser

Please upgrade or download one of the following browsers to use Instant Tutoring: