HSPT Math : Arithmetic

Study concepts, example questions & explanations for HSPT Math

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Example Questions

Example Question #51 : Percentages

What percentage of  is ?

Possible Answers:

Correct answer:

Explanation:

Rewrite the question in parts. A percentage is something out of .

Solve for .

Example Question #581 : Concepts

 is  of what number?

Possible Answers:

Correct answer:

Explanation:

 is  of a number we will call ; alternatively,  multiplied by  is equal to . Set up this equation and solve for :

Example Question #582 : Concepts

 is what percent of ?

Possible Answers:

Correct answer:

Explanation:

Set up the proportion statement, where  is our answer, and solve:

Example Question #13 : Percentage

What is  of ?

Possible Answers:

Correct answer:

Explanation:

One way to figure out what number is a percentage of a larger number is to convert the percent into a decimal and multiply it by the whole number. Since  is equal to , multiply this by .

 is your answer.

 

Example Question #31 : Percentage

 of what number is ?

Possible Answers:

Correct answer:

Explanation:

Taking  of a number is the same as multiplying that number by . We can find our number, therefore, by dividing  by :

Example Question #12 : How To Find The Part From The Whole With Percentage

What is  of ?

Possible Answers:

Correct answer:

Explanation:

Rewrite  as a decimal by writing  with a decimal point, then shifting it two spaces left:

Multiply this by :

Example Question #583 : Concepts

Convert  into a decimal.

Possible Answers:

Correct answer:

Explanation:

In order to convert from a percentage to a decimal, simply remove the percentage and move the decimal place back two spaces or divide by 100.

The decimal conversion is:  

Example Question #4 : Use Proportional Relationships To Solve Multistep Ratio And Percent Problems: Ccss.Math.Content.7.Rp.A.3

What number increased by 25% is equal to 7?

Possible Answers:

Correct answer:

Explanation:

To increase a number by 25% is to take

 of the number, or, equivalently, multiply it by

.

Therefore, we divide 7 by :

, so

.

Example Question #5 : Use Proportional Relationships To Solve Multistep Ratio And Percent Problems: Ccss.Math.Content.7.Rp.A.3

What number decreased by 25% is equal to 7?

Possible Answers:

Correct answer:

Explanation:

To decrease a number by 25% is to take

 of the number, or, equivalently, multiply it by

.

Therefore, we divide 7 by :

, so

.

Example Question #583 : Concepts

What is  increased by 30%?

Possible Answers:

Correct answer:

Explanation:

Increasing a number by 30% is equivalent to taking 130% of a number, which in turn is equivalent to multiplying it by 

 increased by 30% is the product of  and :

, so this quantity is equal to , the correct answer.

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