Write the decimal as a percent: 0.3
4. Write the decimal as a percent: 5.16
5. Write the percent as a decimal: 61%
6. Order from least to greatest: 68%, one half , 0.55, 1.28
7. Write the fraction as a percent. If necessary, round to the nearest tenth of a percent: nine twenty fifths
8. Write 0.64% as a decimal and a fraction in simplest form.
9. Liam wants to buy a bicycle that costs $290.00. His parents say Liam must raise 40% of the money himself. How much money must Liam raise?
10. Use mental math to find 90% of $1,200.
11. Use a proportion to solve. If necessary, round to the nearest percent. There are 12 players on the basketball roster. 9 of the players are in the 8th grade. What percent of the team is not in the 8th grade?
12. 95 is 20% of what number?
13. Use an equation to solve. What number is 25% of 770?
14. What percent of 355 is 71?
15. Find the total cost of a $363.99 airline ticket with a sales tax of 4%.
16. Find the total weekly earnings for a waitress with a weekly salary of $275 plus a 3% commission on dinners, if the total worth of the dinners she served was $4,800.00.
17. You tell your parents that you will pay the 15% tip for dinner. The bill was $130.56. You have $20.
a. Do you have enough to pay the tip?
b. How much should the tip be?
18. Find the percent of increase. Round to the nearest tenth: 125 to 240
19. Find the percent of discount. Round to the nearest tenth: original price $24,365; selling price $16,820
20. A department store purchases a dress for $80. To sell the dress to customers, the price is marked up by 19%. You hand the clerk $110. How much change will you get back?
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4. To write the decimal 5.16 as a percent, you can move the decimal point two places to the right and add a percent sign. Therefore, 5.16 as a percent is 516%.
5. To write the percent 61% as a decimal, you can divide the percent by 100. Therefore, 61% as a decimal is 0.61.
6. To order the given values from least to greatest, you need to compare them. First, convert the two percent values to decimals by moving the decimal point two places to the left. Therefore, 68% becomes 0.68% and 61% becomes 0.61%. Now, compare the values:
- 0.55 is the smallest value
- one half (0.50) comes next
- 0.61% comes after
- 0.68% is the largest value
So, the ordered values from least to greatest are: 0.55, one half, 0.61%, 0.68%.
7. To write the fraction "nine twenty fifths" as a percent, you can divide 9 by 25 and multiply by 100 to get the decimal equivalent. Then, round the decimal to the nearest tenth of a percent if necessary. Therefore, the fraction nine twenty fifths as a percent is approximately 36%.
8. To write 0.64% as a decimal, you can move the decimal point two places to the left, resulting in 0.0064. To write it as a fraction in simplest form, you can express it as 64/10000 and simplify to 8/1250.
9. To calculate the amount of money Liam must raise, you can take 40% of $290.00 by multiplying 0.40 by $290.00. Therefore, Liam must raise $116.00.
10. To find 90% of $1,200 using mental math, you can multiply 0.90 (which is the decimal equivalent of 90%) by $1,200. Therefore, 90% of $1,200 is $1,080.
11. To find what percent of the basketball team is not in the 8th grade, you can set up a proportion:
9 players in 8th grade / 12 total players = x (players not in 8th grade) / 100 (percent).
Then, solve for x using cross multiplication. Therefore, approximately 25% of the team is not in the 8th grade.
12. To find 20% of what number is equal to 95, you can set up an equation. Let x represent the unknown number:
0.20x = 95
Then, solve for x by dividing both sides of the equation by 0.20. Therefore, the unknown number is 475.
13. To find what number is 25% of 770, you can set up an equation. Let x represent the unknown number:
0.25x = 770
Then, solve for x by dividing both sides of the equation by 0.25. Therefore, the unknown number is 3080.
14. To find what percent of 355 is 71, you can set up a proportion:
x (unknown percent) / 100 = 71 / 355.
Then, solve for x using cross multiplication. Therefore, 71 is approximately 20% of 355.
15. To find the total cost of a $363.99 airline ticket with a 4% sales tax, you can calculate the amount of tax by multiplying 0.04 by $363.99. Then, add the tax amount to the ticket price. Therefore, the total cost of the ticket including sales tax is approximately $378.55.
16. To find the total weekly earnings for a waitress with a weekly salary of $275 plus a 3% commission on dinners, you can calculate the commission by multiplying 0.03 by $4,800. Then, add the commission to the weekly salary. Therefore, the total weekly earnings for the waitress are $419.00.
17.
a. To determine if you have enough money to pay the 15% tip on a $130.56 bill, you can calculate the tip amount by multiplying 0.15 by $130.56. If the result is less than or equal to the amount of money you have ($20), then you have enough to pay the tip. In this case, the tip amount is $19.58, which is less than $20. So, you have enough to pay the tip.
b. To calculate the amount of the tip on a $130.56 bill at 15%, you can multiply 0.15 by $130.56. Therefore, the tip should be $19.58.
18. To find the percent of increase from 125 to 240, you can subtract the original value (125) from the final value (240), then divide that difference by the original value (125). Finally, multiply the result by 100 to convert it to a percentage. Therefore, the percent of increase is approximately 92%.
19. To find the percent of discount between an original price of $24,365 and a selling price of $16,820, you can subtract the selling price from the original price to get the discount amount. Then, divide the discount by the original price and multiply by 100 to convert it to a percentage. Therefore, the percent of discount is approximately 30.9%.
20. To calculate the change you will receive after purchasing a dress for $80 and giving the clerk $110, you can subtract the purchase price ($80) from the amount you hand the clerk ($110). Therefore, you will receive $30 in change.
0.3 = 3/10 = 30%
61% = .61
Now get busy and study.
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