SSAT Middle Level Math : How to find the decimal equivalent of a fraction

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

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Example Questions

Example Question #1 : How To Find The Decimal Equivalent Of A Fraction

Write the decimal equivalent of \(\displaystyle \frac{3}{400}\).

Possible Answers:

\(\displaystyle 0.006\)

\(\displaystyle 0.00675\)

\(\displaystyle 0.009\)

\(\displaystyle 0.00625\)

\(\displaystyle 0.0075\)

Correct answer:

\(\displaystyle 0.0075\)

Explanation:

\(\displaystyle \frac{3}{400} = 3 \div 400 = 0.0075\)

Example Question #2 : How To Find The Decimal Equivalent Of A Fraction

Express 0.014 as a fraction in lowest terms.

Possible Answers:

\(\displaystyle \frac{7}{50}\)

\(\displaystyle \frac{7}{200}\)

\(\displaystyle \frac{7}{2,000}\)

\(\displaystyle \frac{7}{500}\)

\(\displaystyle \frac{14}{1,000}\)

Correct answer:

\(\displaystyle \frac{7}{500}\)

Explanation:

The fraction has its last nonzero digit in the thousandths place, so write the number, without the decimal point, over 1,000. Then reduce.

\(\displaystyle \frac{14}{1,000} =\frac{14\div 2}{1,000\div 2} = \frac{7}{500}\)

Example Question #3 : How To Find The Decimal Equivalent Of A Fraction

Express \(\displaystyle \frac{3}{400}\) as a decimal.

Possible Answers:

\(\displaystyle 0.00625\)

\(\displaystyle 0.00675\)

\(\displaystyle 0.006\)

\(\displaystyle 0.009\)

\(\displaystyle 0.0075\)

Correct answer:

\(\displaystyle 0.0075\)

Explanation:

\(\displaystyle \frac{3}{400} = 3 \div 400 = 0.0075\)

Example Question #4 : How To Find The Decimal Equivalent Of A Fraction

Which of the following is NOT equal to \(\displaystyle 0.5 \bullet 20\)?

Possible Answers:

\(\displaystyle \frac{1}{5} \bullet 50\)

\(\displaystyle \frac{3}{4} \bullet 16\)

\(\displaystyle 2 \bullet 5\)

 

\(\displaystyle \frac{2}{3} \bullet 15\)

\(\displaystyle \frac{1}{4} \bullet 40\)

Correct answer:

\(\displaystyle \frac{3}{4} \bullet 16\)

Explanation:

All of the answer choices multiply to give you 10 except

 \(\displaystyle \frac{3}{4} \bullet 16\) 

so that is the correct answer.

Example Question #5 : How To Find The Decimal Equivalent Of A Fraction

What fractions equals \(\displaystyle 0.5\)?

Possible Answers:

\(\displaystyle \frac{8}{32}\)

\(\displaystyle \frac{8}{4}\)

\(\displaystyle \frac{8}{2}\)

\(\displaystyle \frac{8}{16}\)

\(\displaystyle \frac{8}{12}\)

Correct answer:

\(\displaystyle \frac{8}{16}\)

Explanation:

\(\displaystyle 0.5\) is equal to \(\displaystyle \frac{1}{2}\).  

Thus we are looking for a fraction that reduces to \(\displaystyle \frac{1}{2}\).

\(\displaystyle \frac{8}{12}\) reduces to \(\displaystyle \frac{2}{3}\) (divide numerator and denominator by 4).

\(\displaystyle \frac{8}{4}\) reduces to 2 (divide numerator and denominator by 4).  

\(\displaystyle \frac{8}{2}\) reduces to 4 (divide numerator and denominator by 2).

\(\displaystyle \frac{8}{32}\) reduces \(\displaystyle \frac{1}{4}\) (divide numerator and denominator by 4).

\(\displaystyle \frac{8}{16}\) is the only one that reduces to \(\displaystyle \frac{1}{2}\) (divide numerator and denominator by 8).

Example Question #5 : How To Find The Decimal Equivalent Of A Fraction

Write as a decimal: 

\(\displaystyle \frac{5}{9}\)

Possible Answers:

\(\displaystyle 0.5\)

\(\displaystyle 0.\overline{54}\)

\(\displaystyle 0.\overline{45}\)

\(\displaystyle 0.5\overline{4}\)

\(\displaystyle 0.\overline{5}\)

Correct answer:

\(\displaystyle 0.\overline{5}\)

Explanation:

\(\displaystyle 5 \div 9 = 0.5555...\)

That is, the digit 5 will repeat infinitely. This can be written as \(\displaystyle 0.\overline{5}\).

Example Question #6 : How To Find The Decimal Equivalent Of A Fraction

Write as a decimal:

\(\displaystyle \frac{9}{11}\)

Possible Answers:

\(\displaystyle 0.81\)

\(\displaystyle 0.\overline{8}\)

\(\displaystyle 0.\overline{81}\)

\(\displaystyle 0.8\overline{1}\)

\(\displaystyle 0.9\)

Correct answer:

\(\displaystyle 0.\overline{81}\)

Explanation:

\(\displaystyle 9 \div 11 = 0.81818181...\)

That is, the group "81" will repeat infinitely. This quotient can be written as \(\displaystyle 0.\overline{81}\).

Example Question #7 : How To Find The Decimal Equivalent Of A Fraction

Rewrite as a decimal: 

\(\displaystyle \frac{7}{12}\)

Possible Answers:

\(\displaystyle 0.575\)

\(\displaystyle 0.\overline{53}\)

\(\displaystyle 0.58\overline{3}\)

\(\displaystyle 0.5\overline{3}\)

\(\displaystyle 0.58\)

Correct answer:

\(\displaystyle 0.58\overline{3}\)

Explanation:

\(\displaystyle 7 \div 12 = 0.583333...\)

That is, after 5 and 8, the digit 3 will repeat infinitely. This can be rewritten as \(\displaystyle 0.58\overline{3}\).

Example Question #8 : How To Find The Decimal Equivalent Of A Fraction

Write as a decimal:

\(\displaystyle \frac{5}{18}\)

Possible Answers:

\(\displaystyle 0.\overline{27}\)

\(\displaystyle 0.\overline{277}\)

\(\displaystyle 0.2727\)

\(\displaystyle 0.27\)

\(\displaystyle 0.2\overline{7}\)

Correct answer:

\(\displaystyle 0.2\overline{7}\)

Explanation:

\(\displaystyle 5 \div 18 = 0.27777...\)

That is, after the 2, the digit 7 repeats infinitely. This can be rewritten as \(\displaystyle 0.2\overline{7}\).

Example Question #9 : How To Find The Decimal Equivalent Of A Fraction

Express \(\displaystyle \frac{9}{20}\) as a decimal.

Possible Answers:

\(\displaystyle 0.33\)

\(\displaystyle 0.35\)

\(\displaystyle 0.45\)

\(\displaystyle 0.27\)

\(\displaystyle 0.36\)

Correct answer:

\(\displaystyle 0.45\)

Explanation:

Divide the numerator by the denominator:

\(\displaystyle 9 \div 20 = 0.45\)

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