ACT Math : Arithmetic

Study concepts, example questions & explanations for ACT Math

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Example Questions

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 #1531 : Act Math

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 #1 : 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 #11 : Mixed / Improper Fractions

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

Possible Answers:

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

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

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

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

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

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}

Example Question #461 : Arithmetic

What is \frac{23}{4} written as a mixed number?

Possible Answers:

4\frac{1}{4}

2\frac{1}{4}

5\frac{1}{2}

5\frac{3}{4}

Correct answer:

5\frac{3}{4}

Explanation:

 goes into  five times with a remainder of

The denominator does not change. 

Example Question #13 : Mixed / Improper Fractions

Which of the following is the mixed fraction equivalent to ?

Possible Answers:

Correct answer:

Explanation:

To begin, notice that using your calculator, you can find:

Now, the closest even multiple of  that is less than  is .  Therefore, you know that your number is:

This is the same as:

, or simply, .  This is your mixed fraction.

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