HSPT Quantitative : HSPT Quantitative Skills

Study concepts, example questions & explanations for HSPT Quantitative

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Example Questions

Example Question #541 : Hspt Quantitative Skills

What is the difference between 25 percent of 400 and 15 percent of 600?

Possible Answers:

\(\displaystyle 11\)

\(\displaystyle 37\)

\(\displaystyle 190\)

\(\displaystyle 90\)

\(\displaystyle 10\)

Correct answer:

\(\displaystyle 10\)

Explanation:

We first need to determine the value of each equation.  The first equation, 25 percent of 400, can be expressed by multiplying 400 by the decimal version of 25 percent, 0.25.

\(\displaystyle 0.25 \cdot 400 = 100\)

The second equation, 15 percent of 600, can be expressed by multiplying 600 by the decimal version of 15 percent, 0.15.

\(\displaystyle 0.15 \cdot 600 = 90\)

To find the difference, we subtract the second answer from the first answer.

\(\displaystyle 100 - 90 = 10\)

Example Question #542 : Hspt Quantitative Skills

What number is 7 more than the sum of \(\displaystyle 3^{2}\) and \(\displaystyle 4^{2}\)?

Possible Answers:

\(\displaystyle 32\)

\(\displaystyle 31\)

\(\displaystyle 21\)

\(\displaystyle 18\)

\(\displaystyle 14\)

Correct answer:

\(\displaystyle 32\)

Explanation:

First, find the sum of \(\displaystyle 3^{2}\) and \(\displaystyle 4^{2}\).  The equation looks like this:

\(\displaystyle \left ( 3\cdot 3 \right ) + \left ( 4 \cdot 4 \right ) = 9 + 16 = 25\)

7 more than 25 is:

\(\displaystyle 25 + 7 = 32\)

Example Question #192 : How To Manipulate Numbers

What is \(\displaystyle \frac{1}{3}\) of twice \(\displaystyle 27\)?

Possible Answers:

\(\displaystyle 19\)

\(\displaystyle 18\)

\(\displaystyle 17\)

\(\displaystyle 13\)

\(\displaystyle 16\)

Correct answer:

\(\displaystyle 18\)

Explanation:

First, translate the words into numbers.

\(\displaystyle \tfrac{1}{3}*2*27\)

If you multiply \(\displaystyle 27*2\) first, you'll end up with \(\displaystyle 54\), and bigger numbers are harder to deal with. Instead, divide \(\displaystyle 27\) by \(\displaystyle 3\), and multiply that result by \(\displaystyle 2\).

\(\displaystyle 27\div 3=9\)

\(\displaystyle 9*2=18\)

No matter which order you multiply in, you will get the same answer, \(\displaystyle 18\).

Example Question #541 : Hspt Quantitative Skills

What is twice the square of six?

Possible Answers:

\(\displaystyle 48\)

\(\displaystyle 72\)

\(\displaystyle 76\)

\(\displaystyle 81\)

\(\displaystyle 68\)

Correct answer:

\(\displaystyle 72\)

Explanation:

First, turn the words into numbers:

\(\displaystyle 2*6^2\)

Do exponents first, then multiply:

\(\displaystyle 2*36=72\)

 

Example Question #542 : Hspt Quantitative Skills

What is the square of twice five?

Possible Answers:

\(\displaystyle 115\)

\(\displaystyle 100\)

\(\displaystyle 64\)

\(\displaystyle 50\)

\(\displaystyle 75\)

Correct answer:

\(\displaystyle 100\)

Explanation:

Convert the words to numbers.

\(\displaystyle (2*5)^2\)

Do parentheses first, then the exponent:

\(\displaystyle (10)^2=100\)

Example Question #543 : Hspt Quantitative Skills

Subtract 20% of 25 from 26.

Possible Answers:

\(\displaystyle 10\frac{1}{5}\)

\(\displaystyle 31\)

\(\displaystyle 21\)

\(\displaystyle \frac{1}{5}\)

Correct answer:

\(\displaystyle 21\)

Explanation:

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

\(\displaystyle 0.20 \times 25 = 5\)

Subtract 5 from 26:

\(\displaystyle 26 - 5 = 21\),

the correct response.

 

Example Question #544 : Hspt Quantitative Skills

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

Possible Answers:

\(\displaystyle 43\)

\(\displaystyle 36.6\)

\(\displaystyle 38.8\)

\(\displaystyle 41.8\)

Correct answer:

\(\displaystyle 36.6\)

Explanation:

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

\(\displaystyle 0.20 \times 84 = 16 .8\)

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

\(\displaystyle 0.30 \times 66 = 19.8\)

Add these quantities:

\(\displaystyle \begin{matrix} \; \; \; 16.8\\ \underline{+ 19.8}\\ \; \; \; 36.6\; \end{matrix}\)

Example Question #545 : Hspt Quantitative Skills

Subtract 80% of 125 from 75% of 500.

Possible Answers:

\(\displaystyle 225\)

\(\displaystyle 250\)

\(\displaystyle 300\)

\(\displaystyle 275\)

Correct answer:

\(\displaystyle 275\)

Explanation:

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

\(\displaystyle 0.8 \times 125 = 100\)

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

\(\displaystyle 0.75 \times 500 = 375\)

Subtract the former from the latter:

\(\displaystyle \begin{matrix} \; \; \; 375 \\ \underline{- 100} \\ \; \; \; 275 \end{matrix}\)

Example Question #548 : Hspt Quantitative Skills

What number divided by \(\displaystyle 3\) is \(\displaystyle 150\) percent of \(\displaystyle 16\)?

Possible Answers:

\(\displaystyle 72\)

\(\displaystyle 9\)

\(\displaystyle 15\)

\(\displaystyle 24\)

Correct answer:

\(\displaystyle 72\)

Explanation:

First, find \(\displaystyle 150\) percent of \(\displaystyle 16\):

\(\displaystyle 16\cdot1.50=24\)

Then, multiply by \(\displaystyle 3\):

\(\displaystyle 24\times 3=72\)

Example Question #546 : Hspt Quantitative Skills

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

Possible Answers:

\(\displaystyle 230\)

\(\displaystyle 50\)

\(\displaystyle 130\)

\(\displaystyle 55\)

Correct answer:

\(\displaystyle 130\)

Explanation:

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

\(\displaystyle 0.2 \times 500 = 100\).

Add this to 30:

\(\displaystyle 30+100 = 130\)

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