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Unit 2 Review

Unit 2 Review. Created by: Mrs. J Couch. Question 1. Write an equivalent ratio to 2:3. . 4:6 6:9 Etc…. Question 2. 12 is 20% of what number? . 12 = 20 x 100 12*100 = 20*x 1200 = 20*x ÷ 20 ÷20 60 = x. Question 3. Find 12% of 80. . x = 12 80 100

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Unit 2 Review

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  1. Unit 2 Review Created by: Mrs. J Couch

  2. Question 1 • Write an equivalent ratio to 2:3. 4:6 6:9 Etc…..

  3. Question 2 • 12 is 20% of what number? 12 = 20 x 100 12*100 = 20*x 1200 = 20*x ÷ 20 ÷20 60 = x

  4. Question 3 • Find 12% of 80. x = 12 80 100 x*100 = 12*80 100x = 960 ÷ 100 ÷100 x = 9.6 12% * 80 .12 * 80 9.6

  5. Question 4 • Determine the missing value. 24*500 = 32*x 12000 = 32*x ÷ 32 ÷32 375 = x

  6. Question 5 • Write the ratio as a unit rate: $72 for 6 shirts $12 for 1 shirt

  7. Question 6 • Jim drove 288 miles in 4.5 hours. Mary drove 260 miles in 4 hours. Who drove at the fastest rate of speed? 288 mi in 4.5 hr = 64 mi per hour 260 mi in 4 hr = 65 mi per hour

  8. Question 7 • If 1 inch is approximately 2.54 centimeters, how many centimeters are equal in length to 6.5 inches? 1 in = 6.5 in 2.54 cm x 1*x = 2.54*6.5 1*x = 16.51 ÷ 1 ÷1 X = 16.51 cm

  9. Question 8 • The table below shows the number of each item sold at the concession stand. • What might the ratio 3:2 represent? candy bars to popcorn

  10. Question 9 • The ratio of boys to girls in a class is 1:4. If there are 20 students in the class, how many are boys? If boys to girls is 1:4, that means that there is 1 boys out of every 5 kids. 1 boy = x boys 5 kids 20 total kids 1*20 = x*5 20 = x*5 ÷ 5 ÷5 4 boys = x

  11. Question 10 • The table below shows the cost for varying number of books. If the relationship stays the same, determine the value of n. 3 * 6 = 18 12 * 6 = 72 20 * 6 = 120 5 * 6 = 30 N=30

  12. Question 11 • In a class of 80 students, 75% returned their permission slips for the school field trip. How many students returned their permission slips? 75% of the 80 students 75% of 80 .75 * 80 60 students

  13. Question 12 • Cane Middle School held a car wash as a fundraiser. Out of the 25 vehicles that were washed, 17 were cars. What percent of the vehicles were cars? 17 out of 25 17 (change to percent) 25 68%

  14. Question 13 • Melissa’s paycheck last week was $144. She would like to put 22% of her earnings in her savings account. How much money should she put in her savings account? 22% of 144 .22 * 144 $31.68

  15. Question 14 • The graph below compares cups to pints. Which of the following ordered pairs would also satisfy this relationship? A. (8, 4) B. (2, 4) C. (2, 0) D. (1, 2)

  16. Question 15 • The prices of 4 different bottles of shampoo are given in the table. Which size bottle is the worst value? 1 oz = $.1872 1 oz = $.16 1 oz = $.162 1 oz = $.164

  17. Question 16 • Randy drives his race car at a constant speed of 140 miles per hour. Which method can be used as the first step to find the number of hours it will take him to drive 600 miles? A. Divide 600 by 140. B. Multiply 600 by 140. C. Subtract 600 from 140. D. Add 600 to 140. 140 mi = 600 mi 1 hr x 140*x = 600*1 140*x = 600 ÷140 ÷140 X = 4.2

  18. Question 17 • Mr. Jones surveyed his students to determine their favorite sport. They could only make one choice. The results are shown in the table below. • What percent of the students surveyed chose golf? • A. 35% B. 70% C. 65% D. 60% 30 boys and 40 girls choose golf. That is a total of 70 kids choosing golf. A total of 130 kids chose basketball. All together there are 200 kids. Golf: 70/200 = 35%

  19. Question 18 • At the ski park each lift holds 3people, and there are 5 lifts. The lift takes 10 minutes. There are still 150 people in the line, and the lift closes in exactly one hour. Will all the people be able to ride the lift? Justify your answer. 1 lift holds 3 people and there are 5 lifts, 15 people can ride at once. They can move 15 people every 10 minutes. 15 people = 150 people 10 min x min 15* x = 150*10 15*x = 1500 ÷15 ÷15 X = 100 minutes—(which is 1 hr and 40 min) no, they will not make it

  20. Questions???

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