SSAT Upper Level Math : Operations with Fractions

Study concepts, example questions & explanations for SSAT Upper Level Math

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Example Questions

Example Question #1252 : Ssat Upper Level Quantitative (Math)

Janice had \displaystyle \frac{3}{4} of a cup of milk. If she used \displaystyle \frac{1}{12} cup to make some scrambled eggs, how much of a cup of milk does she have left?

Possible Answers:

\displaystyle \frac{1}{3}

\displaystyle \frac{3}{5}

\displaystyle \frac{1}{4}

\displaystyle \frac{2}{3}

Correct answer:

\displaystyle \frac{2}{3}

Explanation:

Subtract the two fractions. To subtract them, they must have a common denominator. Multiply the numerator and denominator of \displaystyle \frac{3}{4} by \displaystyle 3 to create a common denominator of \displaystyle 12, then subtract the numerators and reduce the resulting fraction.

\displaystyle \frac{3}{4}-\frac{1}{12}=\frac{9}{12}-\frac{1}{12}=\frac{8}{12}=\frac{2}{3}

Example Question #1 : Operations With Fractions

What is the result of this operation?

\displaystyle \frac{3}{4}-\frac{1}{4}=?

Possible Answers:

\displaystyle \frac{1}{2}

\displaystyle 1

\displaystyle \frac{3}{4}

\displaystyle \frac{2}{7}

\displaystyle \frac{1}{4}

Correct answer:

\displaystyle \frac{1}{2}

Explanation:

Since the denominators are exactly the same, we can just subtract the tops.

So

\displaystyle \frac{3}{4}-\frac{1}{4}=\frac{2}{4}

By reducing we get

\displaystyle \frac{1}{2}

Example Question #2 : Operations With Fractions

What is the result of this operation?

\displaystyle \frac{2}{7}-\frac{1}{7}=?

 

Possible Answers:

\displaystyle 0

\displaystyle \frac{2}{7}

\displaystyle \frac{4}{7}

\displaystyle \frac{1}{7}

\displaystyle \frac{3}{7}

Correct answer:

\displaystyle \frac{1}{7}

Explanation:

Since the denominators are the same, we can just subtract the numerators.

So

\displaystyle \frac{2}{7}-\frac{1}{7}=\frac{1}{7}

Example Question #3 : Operations With Fractions

What is the result of this operation?

\displaystyle \frac{4}{9}-\frac{1}{9}=?

Possible Answers:

\displaystyle 3

\displaystyle \frac{4}{9}

\displaystyle \frac{1}{9}

\displaystyle \frac{1}{3}

\displaystyle \frac{2}{9}

Correct answer:

\displaystyle \frac{1}{3}

Explanation:

Since the denominators are the same, we can just subtract the numerators.

\displaystyle \frac{4}{9}-\frac{1}{9}=\frac{3}{9}

By reducing our result, we get

\displaystyle \frac{1}{3}

Example Question #4 : Operations With Fractions

What is the result of this operation?

\displaystyle \frac{2}{9}-\frac{2}{9}=?

Possible Answers:

\displaystyle 4

\displaystyle 9

\displaystyle 0

\displaystyle 1

\displaystyle \frac{4}{9}

Correct answer:

\displaystyle 0

Explanation:

Since the denominators are the same, we can just subtract the numerators.

\displaystyle \frac{2}{9}-\frac{2}{9}=\frac{0}{9}

The result can just be reduced to

\displaystyle 0

Example Question #5 : Operations With Fractions

What is the result of the operation

\displaystyle \frac{4}{5}-\frac{3}{5}=?

Possible Answers:

\displaystyle \frac{1}{5}

\displaystyle \frac{3}{5}

\displaystyle 0

\displaystyle \frac{4}{5}

\displaystyle \frac{2}{5}

Correct answer:

\displaystyle \frac{1}{5}

Explanation:

Since the denominators are the exact same, we can just subtract the numerators.

\displaystyle \frac{4}{5}-\frac{3}{5}=\frac{1}{5}

Example Question #1261 : Ssat Upper Level Quantitative (Math)

What is the result of this operation

\displaystyle \frac{4}{13}-\frac{2}{13}=?

Possible Answers:

\displaystyle \frac{4}{13}

\displaystyle \frac{1}{13}

\displaystyle \frac{2}{13}

\displaystyle \frac{3}{13}

\displaystyle \frac{5}{13}

Correct answer:

\displaystyle \frac{2}{13}

Explanation:

Since the denominators are the exact same, we can just subtract the numerators.

\displaystyle \frac{4}{13}-\frac{2}{13}=\frac{2}{13}

Example Question #1262 : Ssat Upper Level Quantitative (Math)

What is the result of this operation

\displaystyle \frac{6}{6}-\frac{3}{6}=?

Possible Answers:

\displaystyle \frac{9}{6}

\displaystyle \frac{1}{5}

\displaystyle \frac{1}{2}

\displaystyle \frac{1}{3}

\displaystyle \frac{1}{3}

Correct answer:

\displaystyle \frac{1}{2}

Explanation:

Since the denominators are the same, we can just subtract the numerators.

\displaystyle \frac{6}{6}-\frac{3}{6}=\frac{3}{6}

which we can reduce to

\displaystyle \frac{1}{2}

Example Question #192 : Number Concepts And Operations

What is the result of this operation?

\displaystyle \frac{1}{6}-\frac{1}{3}=?

Possible Answers:

\displaystyle \frac{1}{12}

\displaystyle -\frac{1}{6}

\displaystyle \frac{1}{3}

\displaystyle -\frac{1}{3}

\displaystyle \frac{1}{6}

Correct answer:

\displaystyle -\frac{1}{6}

Explanation:

Since the denominators are different, we need to transform them into the same denominator.

So

\displaystyle \frac{1}{6}-\frac{1}{3}=?

becomes

\displaystyle \frac{1}{6}-\frac{1*2}{3*2}=?

\displaystyle \frac{1}{6}-\frac{2}{6}=?

Now subtract the numerators

\displaystyle \frac{1}{6}-\frac{2}{6}=\frac{-1}{6}

Example Question #6 : Operations With Fractions

What is the result of this operation

\displaystyle \frac{2}{7}-\frac{3}{7}=?

Possible Answers:

\displaystyle 7

\displaystyle \frac{2}{7}

\displaystyle -\frac{1}{7}

\displaystyle \frac{1}{7}

\displaystyle -\frac{2}{7}

Correct answer:

\displaystyle -\frac{1}{7}

Explanation:

Since the denominators are the same, we can just subtract the numerators.

\displaystyle \frac{2}{7}-\frac{3}{7}=\frac{-1}{7}

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