ACT Math : Fractions

Study concepts, example questions & explanations for ACT Math

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Example Questions

Example Question #1472 : Sat Mathematics

Which of the following improper fractions is equivalent to ?

Possible Answers:

Correct answer:

Explanation:

To find an improper fraction, you need to multiply the whole number that you have by the denominator of the associated fraction.  For our problem, this means that you will multiply  by , getting .  Next, you add this to the numerator of your fraction, giving you , or .  Finally, you place this over your original denominator, giving you: 

Example Question #3 : How To Find Out An Improper Fraction From A Mixed Fraction

Which of the following improper fractions is equivalent to ?

Possible Answers:

Correct answer:

Explanation:

To find an improper fraction, you need to multiply the whole number that you have by the denominator of the associated fraction.  For our problem, this means that you will multiply  by , getting .  Next, you add this to the numerator of your fraction, giving you , or .  Finally, you place this over your original denominator, giving you: 

Example Question #141 : Fractions

Convert  to an improper fraction.

Possible Answers:

Correct answer:

Explanation:

To determine the numerator of the improper fraction, multiply the denominator with the whole number. Then add this with the numerator. The denominator will remain the same.

Example Question #5 : How To Find Out An Improper Fraction From A Mixed Fraction

Which of the following is equivalent to ?

Possible Answers:

Correct answer:

Explanation:

Remember that to convert mixed fractions, you can treat it like an addition.  Thus

You then find the common denominator of the two which is :

Example Question #7 : Mixed / Improper Fractions

Which of the following is equivalent to ?

Possible Answers:

Correct answer:

Explanation:

Remember that to convert mixed fractions, you can treat it like an addition.  Thus

You then find the common denominator of the two which is :

Example Question #8 : Mixed / Improper Fractions

Simplify:

Possible Answers:

Correct answer:

Explanation:

Remember that to convert mixed fractions, you can treat it like an addition.  Thus

Now, using the common denominator of , you know:

Another way to do this is to notice that .  Then you just add these values to  and .

Example Question #5 : How To Find Out An Improper Fraction From A Mixed Fraction

Which of the following is equivalent to ?

Possible Answers:

Correct answer:

Explanation:

Use your calculator to your advantage.  You know that  is .  This means that the mixed fraction equivalent must be of the form:

Now, you find the fractional portion by multiplying  by , which when rounded gives you .  (The quickest way to get  in your calculator is to subtract  from .)  Thus, your answer is:

Example Question #6 : How To Find Out An Improper Fraction From A Mixed Fraction

Which of the following is equivalent to ?

Possible Answers:

Correct answer:

Explanation:

Use your calculator to your advantage.  You know that  is .  This means that the mixed fraction equivalent must be of the form:

Now, you find the fractional portion by multiplying  by , which when rounded gives you .  (The quickest way to get  in your calculator is to subtract  from .)  Thus, your answer is:

Example Question #1531 : Act Math

Which of the following is equivalent to ?

Possible Answers:

Correct answer:

Explanation:

Use your calculator to your advantage.  You know that  is .  This means that the mixed fraction equivalent must be of the form:

Now, you find the fractional portion by multiplying  by , which when rounded gives you .  (The quickest way to get  in your calculator is to subtract  from .)  Thus, your answer is:

, which should be reduced to .

Example Question #142 : Fractions

Convert \dpi{100} \small \frac{21}{4} to a mixed number.

Possible Answers:

\dpi{100} \small \frac{4}{5}

\dpi{100} \small 4\frac{1}{4}

\dpi{100} \small 5\frac{1}{2}

\dpi{100} \small 5\frac{1}{4}

\dpi{100} \small 20\frac{1}{4}

Correct answer:

\dpi{100} \small 5\frac{1}{4}

Explanation:

4 goes into 21 five times. 5 becomes your whole number. There is a remainder of 1 and your denominator remains the same, so your fraction is \dpi{100} \small \frac{1}{4}.

\dpi{100} \small 5\frac{1}{4}

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