7th Grade- 3rd Nine Weeks Review #5 5.4 Use theoretical probability to make predictions. Based on the spinner at the right, what is the probability: A. of spinning an even number? B. of spinning a number less than 6? C. of spinning a number greater than 8? *your answer needs to be a percent* 3.8 Solve contextual problems involving two-step linear equations. A flat contains 30 eggs. A baker bought 18 flats of eggs. This is 7 more flats that he bought last week. Use the equation 30(18) = x + 7(30) to find how many eggs he bought last week. A. 210 B. 330 C. 540 D. 750 2.3 Use rational numbers and perfect squares/cubes to solve contextual problems. Which point represents the location of ? 5.3 Calculate and interpret the mean, median, mode, upper and lower quartile, and interquartile range of a set of data. Abby wrote down the heights of her classmates in inches and put her data in a box and whisker plot. What is the interquartile range of her data? A. 12 in. B. 22 in. C. 42 in. D. 52 in. 1. A. 50% B. 62.5% C. 0% 2. B 3. B 4. A

7th Grade- 3rd Nine Weeks Review #5 5.4 Use theoretical probability to make predictions. Look at the spinner. Which event has the greatest probability? A. spinning a 5 B. spinning an even number C. spinning an odd number D. spinning a number that is NOT a factor of 6 3.8 Solve contextual problems involving two-step linear equations. The table shows what Kayla earns each hour doing various jobs. Last week, she earned a total of $121. She baby-sat for 4 hours and did yard work for 3 hours. Use the equation, 4(9) + 3(7) + 8x = 121 to see how many hours she did house cleaning? 2.3 Use rational numbers and perfect squares/cubes to solve contextual problems. Margie weaved a square rug. The area of the rug is shown in the picture. What is the perimeter of the rug? A. 45 cm B. 90 cm C. 180 cm D. 506 cm 5.3 Calculate and interpret the mean, median, mode, upper and lower quartile, and interquartile range of a set of data. Which measure of central tendency is the greatest for this set of data? (mean, median, mode, or range) 1. C 2. 8 hours 3. C 4. range

7th Grade- 3rd Nine Weeks Review #5 5.4 Use theoretical probability to make predictions. A laundry bag contains 4 green socks. 6 red socks, and 2 blue socks. Inez reaches into the bag and pulls out a sock. What is the probability that she will pull out a red or a blue sock? 3.8 Solve contextual problems involving two-step linear equations. Coco studies each day after school. She spends equal amounts of time studying science and language arts, and always works on math homework for 50 minutes. On Tuesday, Coco decides to do homework for 2 hours. Use the equation 50 + 2x = 120. How much time does she work on science? A. 30 min B. 35 min C. 70 min D. 75 min 2.3 Use rational numbers and perfect squares/cubes to solve contextual problems. 5.3 Calculate and interpret the mean, median, mode, upper and lower quartile, and interquartile range of a set of data. Ms. Dale recorded the number of students absent each day for a month and then placed the information onto the box-and-whisker plot below. What is the lower quartile of the data? A. 8 students B. 18 students C. 20 students D. 26 students 1. 8/12 or 2/3 2. B. 3. 6 in 4. B.

7th Grade- 3rd Nine Weeks Review #5 5.4 Use theoretical probability to make predictions. Max will spin this spinner 24 times. How often would you expect the spinner to land on a triangle or star? A. 10 times B. 12 times C. 15 times D. 16 times 3.8 Solve contextual problems involving two-step linear equations. Kenia receives a weekly allowance of $15. This week she has $8.25 left after buying lunches for $2.25. How many lunches did she buy? 2.3 Use rational numbers and perfect squares/cubes to solve contextual problems. Arria earned money baby-sitting Saturday night. She spent ½ of it on Sunday at the movies and ¼ of the remaining amount on lunch. After buying a book for $7.55, she had $6.25 left. How much did she earn baby-sitting on Saturday? A. $13.80 B. $18.40 C. $36.80 D. $55.20 5.3 Calculate and interpret the mean, median, mode, upper and lower quartile, and interquartile range of a set of data. The box-and-whisker plot below shows the hair lengths in inches for boys and girls in a math class. How much greater is the upper quartile of the girls’ hair lengths than the upper quartile for the boys’ hair lengths? A 1. C 2. 3 lunches 3. C 4. 9 inches

7th Grade- 3rd Nine Weeks Review Assessment #5 day 5 Mental Math- none on this day Answers: Answers may be found in this week’s reviews.