HSPT Quantitative : Number Manipulation*

Study concepts, example questions & explanations for HSPT Quantitative

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Example Questions

Example Question #191 : How To Manipulate Numbers

What number is 7 more than the sum of  and ?

Possible Answers:

Correct answer:

Explanation:

First, find the sum of  and .  The equation looks like this:

7 more than 25 is:

Example Question #192 : How To Manipulate Numbers

What is of twice ?

Possible Answers:

Correct answer:

Explanation:

First, translate the words into numbers.

If you multiply first, you'll end up with , and bigger numbers are harder to deal with. Instead, divide by , and multiply that result by .

No matter which order you multiply in, you will get the same answer, .

Example Question #191 : Number Manipulation*

What is twice the square of six?

Possible Answers:

Correct answer:

Explanation:

First, turn the words into numbers:

Do exponents first, then multiply:

 

Example Question #192 : Number Manipulation*

What is the square of twice five?

Possible Answers:

Correct answer:

Explanation:

Convert the words to numbers.

Do parentheses first, then the exponent:

Example Question #193 : Number Manipulation*

Subtract 20% of 25 from 26.

Possible Answers:

Correct answer:

Explanation:

To subtract 20% of 25 from 26, we first find 20% of 25. The decimal equivalent of 20% is 0.20, so multiply:

Subtract 5 from 26:

,

the correct response.

 

Example Question #194 : Number Manipulation*

Add 20% of 84 to 30% of 66. What is the result?

Possible Answers:

Correct answer:

Explanation:

20% of 84 is equal to 84 multiplied by 0.20; this is equal to

30% of 66 is equal to 66 multiplied by 0.30; this is equal to 

Add these quantities:

Example Question #195 : Number Manipulation*

Subtract 80% of 125 from 75% of 500.

Possible Answers:

Correct answer:

Explanation:

80% of 125 is equal to 0.80 - or 0.8 - multiplied by 125:

75% of 500 is equal to 0.75 multiplied by 500. 

Subtract the former from the latter:

Example Question #198 : How To Manipulate Numbers

What number divided by  is  percent of ?

Possible Answers:

Correct answer:

Explanation:

First, find  percent of :

Then, multiply by :

Example Question #196 : Number Manipulation*

Add 20% of 500 to 30. What is the result?

Possible Answers:

Correct answer:

Explanation:

20% of 500 is equal to the decimal equivalent of 20%, or 0.20 or 0.2, multiplied by 500; this is 

.

Add this to 30:

Example Question #200 : How To Manipulate Numbers

Add the square of  to . What is the result?

Possible Answers:

Correct answer:

Explanation:

The square of , or , can be calculated by squaring numerator and denominator:

This is added to  by expressing both fractions in terms of their least common denominator, which is , as follows:

Add numerators:

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