백분율 단원 종합

F.1F.2Answer each question.

1. 1
   What is $4\%$ of $100$?
2. 2
   What is $66\%$ of $250$?
3. 3
   What is $8\%$ of $400$?
4. 4
   What is $29\%$ of $400$?
5. 5
   What percent of $100$ is $51$?
6. 6
   $114$ is $60\%$ of what number?
7. 7
   What percent of $340$ is $17$?
8. 8
   What percent of $200$ is $4$?

F.3Find each percent of change and write increase or decrease, or find the new amount.

1. 9
   $40$ to $70$: 
2. 10
   $80$ to $48$: 
3. 11
   $150$ to $180$: 
4. 12
   $110$ to $154$: 

F.4Find each percent error.

1. 13
   A scale shows that a bag of rice weighs $10.2$ pounds. It actually weighs $10$ pounds. What is the percent error?
2. 14
   A scale shows that a bag of rice weighs $22.8$ pounds. It actually weighs $24$ pounds. What is the percent error?
3. 15
   A scale shows that a bag of rice weighs $13.8$ pounds. It actually weighs $11.5$ pounds. What is the percent error?
4. 16
   Ana measured a board as $3.2$ meters long. Its actual length is $4$ meters. What is the percent error?

F.5Answer each question.

1. 17
   With $5\%$ sales tax, a bike costs $\text{\$}66.15$ in all. What was the price before tax?

F.5Answer each question. (continued)

1. 18
   After a $30\%$ discount, a guitar costs $\text{\$}60.90$. What was the original price?
2. 19
   With $8\%$ sales tax, a backpack costs $\text{\$}295.92$ in all. What was the price before tax?
3. 20
   After a $30\%$ discount, a video game costs $\text{\$}206.50$. What was the original price?

F.6Answer each question.

1. 21
   $61$ is $61\%$ of what number?
2. 22
   What percent of $280$ is $98$?
3. 23
   $14$ is $5\%$ of what number?
4. 24
   What percent of $100$ is $73$?

F.1F.2Answer each question.

1. 1$4$
2. 2$165$
3. 3$32$
4. 4$116$
5. 5$51\%$
6. 6$190$
7. 7$5\%$
8. 8$2\%$

F.3Percent of Change

1. 9$75\%$ increase
2. 10$40\%$ decrease
3. 11$20\%$ increase
4. 12$40\%$ increase

F.4Percent Error

1. 13$2\%$
2. 14$5\%$
3. 15$20\%$
4. 16$20\%$

F.5Find the Original Amount

1. 17$\text{\$}63.00$
2. 18$\text{\$}87.00$
3. 19$\text{\$}274.00$
4. 20$\text{\$}295.00$

F.6Percents Review

1. 21$100$
2. 22$35\%$
3. 23$280$
4. 24$73\%$