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HSPT Math : Percentages

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Example Questions

Example Question #1755 : Isee Middle Level (Grades 7 8) Mathematics Achievement

What is 40% of $\frac{2}{5}$ ?

Possible Answers:

$\frac{4}{25}$

$\frac{8}{25}$

$\frac{2}{25}$

$\frac{1}{25}$

Correct answer:

$\frac{4}{25}$

Explanation:

Set up the percent proportion, where is the part:

$\frac{N}{(\frac{2}{5})} = \frac{40}{100}$

Solve for , rewriting as follows:

$N \div \frac{2}{5} = \frac{40\div 20}{100\div 20}$

$N \cdot \frac{5}{2} = \frac{2}{5}$

$N \cdot \frac{5}{2} \div \frac{5}{2} = \frac{2}{5} \div \frac{5}{2}$

$N = \frac{2}{5} \cdot \frac{2} {5} = \frac{4}{25}$

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

How much would a $\$30$ product sold for $20\%$ off cost?

Possible Answers:

$\$20$

$\$36$

$\$24$

$\$25$

Correct answer:

$\$24$

Explanation:

First, find $20\%$ of $\$30$ :

$0.2\cdot \$30=\$6$

Then, subtract this value from the whole:

$\$30-\$6=\$24$

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Example Question #13 : How To Find The Part From The Whole With Percentage

How much would a $\$110$ product sold for $10\%$ off cost?

Possible Answers:

$\$100$

$\$99$

$\$10$

$\$11$

Correct answer:

$\$99$

Explanation:

First, find $10\%$ of $\$110$ :

$0.1\cdot \$110=\$11$

Then, subtract this value from the whole:

$\$110-\$11=\$99$

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Example Question #1761 : Isee Middle Level (Grades 7 8) Mathematics Achievement

Solve for .

$\small 9\ is\ x\%\ of\ 30.$

Possible Answers:

$\small x=30$

$\small x=3$

$\small x=21$

$\small x=2.1$

Correct answer:

$\small x=30$

Explanation:

Use a proportion to solve the problem.

$\small \frac{9}{30}=\frac{x}{100}$

Cross multiply

$\small 30x=900$

$\small \frac{30x}{30}=\frac{900}{30}$

$\small x=30$

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Example Question #11 : Percentages

Sally painted 11 pictures on Monday, 7 pictures on Wednesday, and 3 pictures on Friday. On average, how many pictures did Sally paint on those 3 days?

Possible Answers:

Correct answer:

Explanation:

To solve, first find the total number of pictures painted:

$\small 11 + 7+ 3= 21$

Then, divide the total number of pictures by the total number of days to find the average.

$\small \small 21\div 3= 7$

Sally painted an average of 7 pictures per day.

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Example Question #1 : Use Proportional Relationships To Solve Multistep Ratio And Percent Problems: Ccss.Math.Content.7.Rp.A.3

200 percent of what number is equal to the difference between 75 and 25?

Possible Answers:

$\small 25$

$\small 200$

$\small 20$

$\small 50$

$\small 30$

Correct answer:

$\small 25$

Explanation:

We must first start by finding the difference between $\small 75$ and $\small 25$ :

$\small 75-25 = 50$

Next find the decimal equivalent of $\small 200$ %, which is done by dividing by $\small 100$ :

$\small 200/100 = 2$

Now we divide $\small 50$ by $\small 2$ .

$\small 50/2 = 25$

Our final answer is $\small 25$ , because when it is multiplied by $\small 200$ %, it equals the difference between $\small 75$ and $\small 25$ .

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Example Question #12 : Percentages

Solve:

$\small 17\% \ of\ 29=$

Possible Answers:

$\small 170.59$

$\small 4.93$

$\small 24.07$

$\small 33.93$

Correct answer:

$\small 4.93$

Explanation:

$\small 17\%\ of\ 29=0.17\times29=4.93$

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Example Question #1763 : Isee Middle Level (Grades 7 8) Mathematics Achievement

What is the sale price of a game if it is % off the original price of $\$35.00$ ?

Possible Answers:

$\$34.65$

$\$27.00$

$\$35.00$

$\$22.75$

$\$22.00$

Correct answer:

$\$22.75$

Explanation:

First, multiply:

$35\ast .35=12.25$

Then subtract that amount from the original price:

35.00-12.25=22.75

Answer: The sale price is $\$22.75$ .

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Example Question #161 : Grade 7

What is the sale price of a carton of milk if it is % off the original price of $\$3.20$ ?

Possible Answers:

$\$1.20$

$\$2.88$

$\$3.00$

$\$2.30$

$\$1.00$

Correct answer:

$\$2.88$

Explanation:

First, multiply:

$3.20\ast .10=.32$

Then subtract that amount from the original price:

3.20-.32=2.88

Answer: The sale price is $\$2.88$ .

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Example Question #162 : Grade 7

What is the sale price of a pair of shoes if it is % off the original price of $\$90.00$ ?

Possible Answers:

$\$50.00$

$\$49.50$

$\$60.00$

$\$32.00$

$\$62.50$

Correct answer:

$\$49.50$

Explanation:

First, multiply:

$90.00\ast .45=40.50$

Then subtract that amount from the original price:

90.00-40.50=49.50

Answer: The sale price is $\$49.50$ .

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All HSPT Math Resources

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HSPT Math : Percentages

Study concepts, example questions & explanations for HSPT Math

All HSPT Math Resources

Example Questions

Example Question #1755 : Isee Middle Level (Grades 7 8) Mathematics Achievement

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

Example Question #13 : How To Find The Part From The Whole With Percentage

Example Question #1761 : Isee Middle Level (Grades 7 8) Mathematics Achievement

Example Question #11 : Percentages

Example Question #1 : Use Proportional Relationships To Solve Multistep Ratio And Percent Problems: Ccss.Math.Content.7.Rp.A.3

Example Question #12 : Percentages

Example Question #1763 : Isee Middle Level (Grades 7 8) Mathematics Achievement

Example Question #161 : Grade 7

Example Question #162 : Grade 7

All HSPT Math Resources

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