SSAT Upper Level Math : Rational Numbers

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

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Example Questions

Example Question #351 : Rational Numbers

Select the symbol to correctly fill in the blank below. 

\(\displaystyle \frac{2}{6}\) __________\(\displaystyle \frac{5}{12}\)

Possible Answers:

\(\displaystyle >\)

\(\displaystyle < \)

\(\displaystyle =\)

Correct answer:

\(\displaystyle < \)

Explanation:

To compare fractions, we need to first make common denominators. 

\(\displaystyle \frac{2}{6}\times\frac{2}{2}=\frac{4}{12}\)

Now that we have common denominators, we can compare numerators. The fraction with the bigger numerator has the greater value. 

\(\displaystyle \frac{4}{12}< \frac{5}{12}\)

Example Question #352 : Rational Numbers

Select the symbol to correctly fill in the blank below. 

\(\displaystyle \frac{3}{6}\) __________\(\displaystyle \frac{12}{24}\)

Possible Answers:

\(\displaystyle >\)

\(\displaystyle =\)

\(\displaystyle < \)

Correct answer:

\(\displaystyle =\)

Explanation:

To compare fractions, we need to first make common denominators. 

\(\displaystyle \frac{3}{6}\times\frac{4}{4}=\frac{12}{24}\)

Now that we have common denominators, we can compare numerators. The fraction with the bigger numerator has the greater value. 

\(\displaystyle \frac{12}{24}=\frac{12}{24}\)

Example Question #352 : Rational Numbers

Divide \(\displaystyle 6\frac{2}{7}\) by \(\displaystyle \frac{1}{4}\). Which of the following comes closest to the quotient?

Possible Answers:

\(\displaystyle 25\)

\(\displaystyle 28\)

\(\displaystyle 24\)

\(\displaystyle 27\)

\(\displaystyle 36\)

Correct answer:

\(\displaystyle 25\)

Explanation:

First convert each mixed fraction into an improper fraction. To do this, multiply the whole number by the denominator and then add it to the numerator. Then place this number of the original denominator.

\(\displaystyle 6\frac{2}{7} \div \frac{1}{4}\)

\(\displaystyle = \frac{6 \times 7+ 2}{7} \div \frac{1}{4}\)

\(\displaystyle = \frac{44}{7} \div \frac{1}{4}\)

Recall that dividing by a fraction is the same as multiplying by the reciprocal.

\(\displaystyle = \frac{44}{7} \times \frac{4}{1}\)

\(\displaystyle = \frac{44 \times 4}{7 \times 1}\)

Multiply the numerators together and the denominators together.

\(\displaystyle = \frac{176}{7 }\)

Divide:

\(\displaystyle 176 \div 7 = 25 \textrm{ R }1\),

making 25 the closest choice.

Example Question #353 : Rational Numbers

Fill in the blank with the correct symbol. 

\(\displaystyle \frac{1}{4}\) __________ \(\displaystyle \frac{2}{4}\)

Possible Answers:

\(\displaystyle =\)

\(\displaystyle >\)

\(\displaystyle < \)

Correct answer:

\(\displaystyle < \)

Explanation:

The fraction models below show \(\displaystyle \frac{1}{}4\) and \(\displaystyle \frac{2}{}4\)

\(\displaystyle \frac{2}{4}\) is greater than \(\displaystyle \frac{1}{4}\) because more of the model is filled in.               

               \(\displaystyle \frac{1}{4}< \frac{2}{4}\) 

1 4 and 2 4 

Example Question #354 : Rational Numbers

Fill in the blank with the correct symbol. 

\(\displaystyle \frac{1}{4}\) __________ \(\displaystyle \frac{3}{4}\)

 

Possible Answers:

\(\displaystyle =\)

\(\displaystyle < \)

\(\displaystyle >\)

Correct answer:

\(\displaystyle < \)

Explanation:

The fraction models below show \(\displaystyle \frac{1}{}4\) and \(\displaystyle \frac{3}{}4\)

\(\displaystyle \frac{3}{4}\) is greater than \(\displaystyle \frac{1}{4}\) because more of the model is filled in.               

               \(\displaystyle \frac{1}{4}< \frac{3}{4}\)

 1 4 and 3 4

Example Question #355 : Rational Numbers

Fill in the blank with the correct symbol. 

\(\displaystyle \frac{2}{4}\) __________ \(\displaystyle \frac{3}{4}\)

Possible Answers:

\(\displaystyle < \)

\(\displaystyle =\)

\(\displaystyle >\)

Correct answer:

\(\displaystyle < \)

Explanation:

The fraction models below show \(\displaystyle \frac{2}{4}\) and \(\displaystyle \frac{3}{}4\)

\(\displaystyle \frac{3}{4}\) is greater than \(\displaystyle \frac{2}{4}\) because more of the model is filled in.               

               \(\displaystyle \frac{2}{4}< \frac{3}{4}\) 

2 4 and 3 4

Example Question #356 : Rational Numbers

Fill in the blank with the correct symbol. 

\(\displaystyle \frac{2}{4}\) __________ \(\displaystyle \frac{2}{4}\)

 

Possible Answers:

\(\displaystyle < \)

\(\displaystyle >\)

\(\displaystyle =\)

Correct answer:

\(\displaystyle =\)

Explanation:

The fraction models below show \(\displaystyle \frac{2}{4}\) and \(\displaystyle \frac{2}{}4\)

\(\displaystyle \frac{2}{4}\) is equal to \(\displaystyle \frac{2}{4}\)               

               \(\displaystyle \frac{2}{4}=\frac{2}{4}\) 

2 4 and 2 4

Example Question #357 : Rational Numbers

Fill in the blank with the correct symbol. 

\(\displaystyle \frac{3}{4}\) __________ \(\displaystyle \frac{3}{4}\)

 

Possible Answers:

\(\displaystyle >\)

\(\displaystyle < \)

\(\displaystyle =\)

Correct answer:

\(\displaystyle =\)

Explanation:

The fraction models below show \(\displaystyle \frac{3}{4}\) and \(\displaystyle \frac{3}{4}\)

\(\displaystyle \frac{3}{4}\) is equal to \(\displaystyle \frac{3}{4}\)      

               \(\displaystyle \frac{3}{4}=\frac{3}{4}\) 

3 4 and 3 4

Example Question #358 : Rational Numbers

Fill in the blank with the correct symbol. 

\(\displaystyle \frac{2}{3}\) __________ \(\displaystyle \frac{1}{3}\)

 

Possible Answers:

\(\displaystyle =\)

\(\displaystyle >\)

\(\displaystyle < \)

Correct answer:

\(\displaystyle >\)

Explanation:

The fraction models below show \(\displaystyle \frac{2}{3}\) and \(\displaystyle \frac{1}{3}\)

\(\displaystyle \frac{2}{3}\) is greater than \(\displaystyle \frac{1}{3}\) because more of the model is filled in.               

               \(\displaystyle \frac{2}{3}>\frac{1}{3}\) 

2 3 and 1 3

Example Question #359 : Rational Numbers

Fill in the blank with the correct symbol. 

\(\displaystyle \frac{2}{6}\) __________ \(\displaystyle \frac{1}{6}\)

 

Possible Answers:

\(\displaystyle =\)

\(\displaystyle < \)

\(\displaystyle >\)

Correct answer:

\(\displaystyle >\)

Explanation:

The fraction models below show \(\displaystyle \frac{2}{6}\) and \(\displaystyle \frac{1}{6}\)

\(\displaystyle \frac{2}{6}\) is greater than \(\displaystyle \frac{1}{6}\) because more of the model is filled in.               

               \(\displaystyle \frac{2}{6}>\frac{1}{6}\) 

2 6 and 1 6

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