ISEE Middle Level Math : Fractions

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

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Example Questions

Example Question #81 : Fractions

Find the equivalent of \displaystyle \frac{30}{120}.

Possible Answers:

\displaystyle 0.25

\displaystyle 0.50

\displaystyle 0.75

\displaystyle 0.40

\displaystyle 0.30

Correct answer:

\displaystyle 0.25

Explanation:

To solve divide:

\displaystyle 30\div 120=0.25

Another way to solve is to reduce the fraction by removing the greatest common factor.

\displaystyle \frac{30}{120}=\frac{30\div30}{120\div30}=\frac{1}{4}

We can then convert so that the denominator is a multiple of ten.

\displaystyle \frac{1}{4}=\frac{1\times25}{4\times25}=\frac{25}{100}

Twenty-five over one hundred, or twenty-five-hundredths, is equal to \displaystyle 0.25.

Answer: \displaystyle 0.25

Example Question #231 : Numbers And Operations

Find the decimal equivalent of \displaystyle \frac{36}{72}.

Possible Answers:

\displaystyle 0.36

\displaystyle 0.72

\displaystyle 0.50

\displaystyle 0.25

\displaystyle 0.42

Correct answer:

\displaystyle 0.50

Explanation:

To solve divide:

\displaystyle 36\div 72=0.50

Another way to solve is to reduce the fraction by removing the greatest common factor.

\displaystyle \frac{36}{72}=\frac{36\div36}{72\div36}=\frac{1}{2}

We can then convert so that the denominator is a multiple of ten.

\displaystyle \frac{1}{2}=\frac{1\times5}{2\times5}=\frac{5}{10}

Five over ten, or five-tenths, is equal to \displaystyle 0.50.

Answer: \displaystyle 0.50

Example Question #1116 : Isee Middle Level (Grades 7 8) Mathematics Achievement

Solve for \displaystyle x:

\displaystyle 11x=781

Possible Answers:

\displaystyle 75

\displaystyle 71

\displaystyle 63

\displaystyle 79

\displaystyle 70

Correct answer:

\displaystyle 71

Explanation:

To solve divide each side by \displaystyle 11:

\displaystyle 11x\div 11=781\div 11

\displaystyle x=71

Answer: \displaystyle 71

Example Question #1117 : Isee Middle Level (Grades 7 8) Mathematics Achievement

What is the decimal equivalent of \displaystyle \frac{54}{90}?

Possible Answers:

\displaystyle 0.54

\displaystyle 0.45

\displaystyle 0.60

\displaystyle 0.90

\displaystyle 0.75

Correct answer:

\displaystyle 0.60

Explanation:

Divide:

\displaystyle 54\div 90=0.60

Another way to solve is to reduce the fraction by removing the greatest common factor.

\displaystyle \frac{54}{90}=\frac{54\div9}{90\div9}=\frac{6}{10}

Six over ten, or six-tenths, is equal to \displaystyle 0.60.

Answer: \displaystyle 0.60

Example Question #232 : Numbers And Operations

What is the decimal equivalent of \displaystyle \frac{81}{90}?

Possible Answers:

\displaystyle 0.50

\displaystyle 0.81

\displaystyle 0.90

\displaystyle 0.75

\displaystyle 0.70

Correct answer:

\displaystyle 0.90

Explanation:

Divide:

\displaystyle 81\div 90=0.90

Another way to solve is to reduce the fraction by removing the greatest common factor.

\displaystyle \frac{81}{90}=\frac{81\div9}{90\div9}=\frac{9}{10}

Nine over ten, or nine-tenths, is equal to \displaystyle 0.90.

Answer: \displaystyle 0.90

Example Question #233 : Numbers And Operations

What is the decimal equivalent of \displaystyle \frac{8}{50}?

Possible Answers:

\displaystyle 0.016

\displaystyle 0.08

\displaystyle 0.16

\displaystyle 0.12

\displaystyle 0.80

Correct answer:

\displaystyle 0.16

Explanation:

Divide:

\displaystyle 8\div 50=.16

Another way to solve is to alter the fraction to get one hundred in the denominator.

\displaystyle \frac{8}{50}=\frac{8\times2}{50\times2}=\frac{16}{100}

Sixteen over one hundred, or sixteen-hundredths, is equal to \displaystyle 0.16.

Answer: \displaystyle 0.16

 

 

Example Question #81 : Fractions

What is the decimal equivalent of \displaystyle \frac{8}{8}?

Possible Answers:

\displaystyle 0.10

\displaystyle 8.8

\displaystyle 1.0

None of these

\displaystyle 8.0

Correct answer:

\displaystyle 1.0

Explanation:

Divide:

\displaystyle 8\div 8=1.0

Any fraction that has an equal numerator and denominator is equal to \displaystyle 1.0.

Answer: \displaystyle 1.0

Example Question #235 : Numbers And Operations

What is the decimal equivalent of \displaystyle \frac{150}{100}?

Possible Answers:

\displaystyle 0.15

None of these

\displaystyle 150

\displaystyle 15

\displaystyle 1.5

Correct answer:

\displaystyle 1.5

Explanation:

Divide:

\displaystyle 150\div 100=1.5

Another way to solve is to reduce the fraction by removing the greatest common factor.

\displaystyle \frac{150}{100}=\frac{150\div50}{150\div50}=\frac{3}{2}

Three over two, or three-halves, is equal to \displaystyle 1.5.

Answer: \displaystyle 1.5

Example Question #236 : Numbers And Operations

Solve:

\displaystyle \sqrt{36}\div \sqrt{16}=

Possible Answers:

\displaystyle 1.25

\displaystyle 0.5

\displaystyle 15

\displaystyle 2

\displaystyle 1.5

Correct answer:

\displaystyle 1.5

Explanation:

First find the individual square roots:

\displaystyle \sqrt{36}=6

\displaystyle \sqrt{16}=4

\displaystyle \sqrt{36}\div \sqrt{16}=6\div4

Then solve:

\displaystyle 6\div 4=1.5

Answer: \displaystyle 1.5

Example Question #82 : Fractions

What is the decimal equivalent of \displaystyle \frac{3}{10}?

Possible Answers:

\displaystyle 0.70

\displaystyle 0.03

\displaystyle 0.65

\displaystyle 0.30

\displaystyle 0.45

Correct answer:

\displaystyle 0.30

Explanation:

To solve, divide:

\displaystyle 3\div 10=0.30

Answer: \displaystyle 0.30

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