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HSPT Math : Concepts

Study concepts, example questions & explanations for HSPT Math

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6 Diagnostic Tests 130 Practice Tests Question of the Day Flashcards Learn by Concept

Example Questions

Example Question #421 : Numbers And Operations

Subtract:

$\frac{33}{45}-\frac{10}{45}=$

Possible Answers:

$\frac{23}{45}$

$\frac{43}{45}$

Correct answer:

$\frac{23}{45}$

Explanation:

Subtract the numerators and keep the denominator the same:

$\frac{33}{45}-\frac{10}{45}=\frac{23}{45}$

Answer: $\frac{23}{45}$

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Example Question #24 : How To Subtract Fractions

Solve:
$\small \frac{17}{4}-\frac{6}{8}=$

Possible Answers:

$\small \frac{11}{4}$

$\small \frac{7}{2}$

$\small \frac{9}{2}$

$\frac{13}{4}$

$\small \frac{11}{8}$

Correct answer:

$\small \frac{7}{2}$

Explanation:

The least common denominator between $\small 4$ and $\small 8$ is $\small 8.$

$\small \frac{17}{4}=\frac{34}{8}$

$\small \frac{34}{8}-\frac{6}{8}=\frac{28}{8}=\frac{7}{2}$

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Example Question #25 : How To Subtract Fractions

Solve the equation:

$\frac{65}{67}-\frac{2}{67}=$

Possible Answers:

$\frac{60}{67}$

$\frac{63}{67}$

Correct answer:

$\frac{63}{67}$

Explanation:

When subtracting fractions that have the same denominator, only the top numbers are subtracted. Subtract the numerators and leave the denominators the same:

$\frac{65}{67}-\frac{2}{67}=\frac{63}{67}$

Answer: $\frac{63}{67}$

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Example Question #26 : How To Subtract Fractions

Subtract: $\frac{52}{90}-\frac{10}{90}=$

Possible Answers:

$\frac{62}{90}$

$\frac{7}{15}$

$\frac{42}{0}$

Correct answer:

$\frac{7}{15}$

Explanation:

Subtract the numerators and keep the denominators the same:

$\frac{52}{90}-\frac{10}{90}=\frac{42}{90}$

Reduce the fraction: $\frac{42\div 2}{90 \div 2}=\frac{21}{45}$

Reduce again: $\frac{21\div 3}{45 \div 3}=\frac{7}{15}$

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Example Question #27 : How To Subtract Fractions

Solve:

$\frac{1}{2}-\frac{3}{7}$

Possible Answers:

$\frac{3}{5}$

$-\frac{3}{5}$

$\frac{1}{7}$

$-\frac{1}{14}$

$\frac{1}{14}$

Correct answer:

$\frac{1}{14}$

Explanation:

The lowest common denominator of 2 and 7 is 14.

$\frac{1}{2}=\frac{7}{14}$

$\frac{3}{7}=\frac{6}{14}$

$\frac{7}{14}-\frac{6}{14}=\frac{1}{14}$

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Example Question #422 : Numbers And Operations

Subtract:

$\frac{5}{15}-\frac{2}{15}=$

Possible Answers:

$\frac{1}{15}$

$\frac{3}{15}$

$\frac{1}{30}$

$\frac{7}{15}$

$\frac{6}{15}$

Correct answer:

$\frac{3}{15}$

Explanation:

Subtract the numerators and leave the denominators the same:

$\frac{5}{15}-\frac{2}{15}=\frac{3}{15}$

Answer: $\frac{3}{15}$

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Example Question #423 : Numbers And Operations

Subtract:

$\frac{3}{12}-\frac{2}{12}=$

Possible Answers:

$\frac{1}{24}$

$\frac{5}{12}$

$\frac{1}{12}$

$\frac{11}{12}$

Correct answer:

$\frac{1}{12}$

Explanation:

Subtract the numerators and leave the denominators the same:

$\frac{3}{12}-\frac{2}{12}=\frac{1}{12}$

Answer: $\frac{1}{12}$

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Example Question #32 : How To Subtract Fractions

$\frac{20}{21}-\frac{14}{21}=$

Possible Answers:

$\frac{3}{21}$

$\frac{10}{21}$

$\frac{20}{21}$

$\frac{6}{21}$

Correct answer:

$\frac{6}{21}$

Explanation:

Subtract the numerators and keep the denominator as is:

$\frac{20}{21}-\frac{14}{21}=\frac{6}{21}$

Answer: $\frac{6}{21}$

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Example Question #471 : Concepts

Evaluate: $8 \tfrac{1}{4} - 5 \tfrac{7}{8}$

Possible Answers:

$3\tfrac{1}{2}$

$3\tfrac{7}{32}$

$3\tfrac{5}{8}$

$2\tfrac{3}{8}$

$3\tfrac{1}{8}$

Correct answer:

$2\tfrac{3}{8}$

Explanation:

Rewrite as fractions with a common denominator:

$8 \tfrac{1}{4} - 5 \tfrac{7}{8}$

$8 \tfrac{2}{8} - 5 \tfrac{7}{8}$

Now, in the first number, "borrow" eight eighths from the units column:

$7 \tfrac{8+2}{8} - 5 \tfrac{7}{8}$

$7 \tfrac{10}{8} - 5 \tfrac{7}{8}$

Subtract fractions by subtracting denominators, then subtract integers.

$7 \tfrac{10}{8}$

$\underline{5 \tfrac{7}{8}}$

$2 \tfrac{3}{8}$

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Example Question #472 : Concepts

$1 \frac{1}{2} + 2 \frac{3}{4} =$

Possible Answers:

4.25

3.75

4.7

4.5

3.25

Correct answer:

4.25

Explanation:

I think the easiest way to do this problem is to make a common denominator. 4 is the smallest common denominator.

$2 \frac{3}{4}$ is equivalent to $\frac{11}{4}$ .

When you add $\frac{6}{4}$ and $\frac{11}{4}$ you get $\frac{17}{4}$ .

$\frac{17}{4}$ reduces to $4 \frac{1}{4}}$ and is equivalent to 4.25 .

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6 Diagnostic Tests 130 Practice Tests Question of the Day Flashcards Learn by Concept

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HSPT Math : Concepts

Study concepts, example questions & explanations for HSPT Math

All HSPT Math Resources

Example Questions

Example Question #421 : Numbers And Operations

Example Question #24 : How To Subtract Fractions

Example Question #25 : How To Subtract Fractions

Example Question #26 : How To Subtract Fractions

Example Question #27 : How To Subtract Fractions

Example Question #422 : Numbers And Operations

Example Question #423 : Numbers And Operations

Example Question #32 : How To Subtract Fractions

Example Question #471 : Concepts

Example Question #472 : Concepts

All HSPT Math Resources

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