Chapter 4. Fractions, Decimals, Percent s Worksheets. Name: Class::

Transcription

1 Chapter 4 Fractions, Decimals, Percent s Worksheets Name: Class::

2 Rounding Worksheet NAME: Thousands Hundreds Tens Units Decimal. Tenths Hundredths Thousandths Use the table provided to help you round each decimal number to the correct place. 1) Round to the nearest tenth. a e b f c g d h ) Round to the nearest hundredth. a d b e c f ) Round to the nearest thousandth. a b

3 Assignment 4.1: Connect NAME: 1. What is 50% of each quantity? a) 24 marbles b) 16 cookies c) $24 d) 8.4 m 2. What is 25% of each quantity? a) 8 daffodils b) 1.2 cm c) 40 min d) $ What is 10% of each quantity? a) 20 min b) 30 cm c) 50 cats d) $ Show how to find each amount. a) 50% of 44 b) 25% of 20 c) 10% of 12 d) 1% of Show how to find each amount. a) 60% of $40 b) 75% of 44 60% = 50% + 10% 75% = 50% + 25%

4 Assignment 4.1: Connect NAME: 6. Change each percent to a decimal. a) 57% b) 30% c) 5% d) 88% 7. Change each fraction to a decimal. a) c) e) 2 5 = b) = 1 2 = d) 5 8 = = f ) 3 4 = 8. Change each decimal into a fraction. a) 0.25 b) Write the numbers in ascending order (smallest to largest). a) 14%, 1 10, 0.12 Write each number in decimal form. The numbers in ascending order are.

5 Assignment 4.1: Connect NAME: b) 27%, 1 4, 0.24 The numbers in ascending order are. c) 41, 10%, d) 88%, 4 5, Write the numbers in descending order (largest to smallest). a) 32%, 3 10, 0.35 Write all numbers in decimal form. The numbers in descending order are. b) 76%, 0.72, 3 4 The numbers in descending order are. c) 1, 45%,

6 Assignment 4.1: Connect NAME: 11. In Carey s class, 25% of the students read fantasy books. There are 32 students in Carey s class. How many students read fantasy books? Find % of students. Sentence: students in Carey s class read fantasy books. 12. Your bill at a restaurant is $28. You want to leave a 15% tip. How much money should you leave? 15% = 25% 10% 25% of 28: 10% of 28: Subtract your answers: Sentence:

7 Assignment 4.2: Fractions, Decimals and Percents NAME 1. Change each fraction to a decimal number. Use the place value chart to round to the place value indicated. Thousands Hundreds Tens Units Decimal Tenths Hundredths Thousandths. a) (Round to the nearest tenth.) b) (Round to the nearest tenth.) c) (Round to the nearest hundredth.) d) (Round to the nearest hundredth.) e) (Round to the nearest thousandth.) f) (Round to the nearest thousandth.)

8 Assignment 4.2: Fractions, Decimals and Percents NAME 2. A baseball player s batting average is the number of hits divided by the number of times at bat. It is usually expressed as a decimal number. Batting Average = number of hits number of times at bat This table shows the data for 1 baseball season. Player Times at Bat Hits A B a) What is the batting average for each player? Round each answer to the nearest thousandth (3 decimal places). Player A: Player B: b) Which batting average would you rather have? Why? 3. Write each decimal using bar notation. Only the repeating digits go under the bar. a) = b) = c) = d) = 4. Change each fraction to a repeating decimal. Then use bar notation to show the repeating part. a) 5 6 b) 2 3 c) 7 11 d) 8 9

9 Assignment 4.2: Fractions, Decimals and Percents NAME 5. Change each decimal number into a fraction. a) 0.95 In what place is the last digit? What should the denominator of the fraction be? What is the fraction? b) 0.3 In what place is the last digit? What should the denominator of the fraction be? What is the fraction? 6. Write each decimal as a fraction. a) 0.71 of Earth s surface is covered with water or ice = b) Matthew s batting average is Write each percent as a fraction. Percent means out of 100. a) Nitrogen makes up approximately 78% of the air we breathe. 78% = 100 b) Jason got 57% on a Math test.

10 Assignment 4.3: Applications of Percents NAME: 1. Calculate which percent is larger. a) 50% of 184 or 25% of 208 b) 50% of 64 or 25% of % of a number is $5.40. a) What is 10% of the number? 10 1% = 10% = b) What is 25% of the number? 25 1% = % 5.40 = c) What is 100% of the number? 3. John s class ordered 25 books. 14 of the books were adventure novels. Melanie s class ordered 40 books. 22 of the books were adventure novels. Which class ordered the greatest percent of adventure novels? Step 1: Write as a decimal. John s class: 14 = = Step 1: Write as a decimal. Melanie s class: = Step 2: Write as a percent. Step 2: Write as a percent. 100% = % Sentence:

11 Assignment 4.3: Applications of Percents NAME: 4. The chart shows the weekly pay for 3 part-time workers. Each worker gets a pay raise. Weekly Worker Weekly Pay Pay Raise Meagan $ $30.00 Carl $ $36.00 Billi $ $40.00 a) What is the percent increase for each worker? Give each answer to the nearest tenth of a percent (1 decimal place). Worker Fraction Decimal Percent Meagan pay raise = weekly pay = = % 100 Carl pay raise weekly pay = = = % Billi pay raise weekly pay = = = % b) Who received the largest percent increase? How do you know?

12 Assignment 4.3: Applications of Percents NAME: 7. The chart shows the number of boys and girls in a school who wear glasses. Wear Glasses Total Population Girls Boys Total To change the decimal to a percent, multiply by 100. a) Calculate the percent of girls who wear glasses. Round your answer to the nearest tenth of a percent (1 decimal place). # of girls who wear glasses Total # of girls Sentence: b) What percent of boys wear glasses? Round your answer to the nearest tenth of a percent (1 decimal place). # of boys who wear glasses Total # of boys Sentence: c) What percent of all the students who wear glasses are boys? Round your answer to the nearest tenth of a percent (1 decimal place). # of boys who wear glasses Total # of students who wear glasses Sentence: