## Wednesday, February 07, 2007

### Cumulative Review Questions

Here are some questions that will prepare you for your test on Friday. Good Luck, be good for Mr. Bartz.

(1) You have a notebook of 23 sheets of paper; and 3 of them are black. A page falls from your notebook; what is the probability is was a black sheet?

(2) The police have cornered this criminal in a small 23 home community. If they have only 46 hours to find him, and they can fully search one house in 2 hours and 23 minutes hours, will they find him?

(3) Zach owns 34 black outfits, and about 5 colored outfits. If he choses his outfit at random, what are the chances that he will select a black outfit on any one day?

(4) What is the Square root of the following numbers. Use your perfect square chart and fractions. Do not use a calculator.
Square Root of 27, 46, 72, 115.

(5) What is 20% of 156?
30 is 29% of what number?
44 is what percent of 62.
55% of 26 is what number?

(6) Jacob has a record of winning
 2 boxing matches for every 4 he loses. If he had 49 matches during the last year, how many did he win?

(7) Christina practices figure skating an average of
 15 hours per week. Kayla practices figure skating an average of 1.5 hours for every hour Christina practices. How many hours a week does Kayla practice?
8. A child can run 5 blocks in 2 minutes. How long does it take the child to run 8 blocks, at the same speed.

(9) Find the mean median and mode of the following sets of numbers.
• 2,5,7,8,3,6,4,5,1
• 12,4,16,22,19,4,
• 78,45,45,78,60,75
(10.)An ice chest contains 9 cans of apple juice, 8 cans of grape juice, 7 cans of orange juice, and 5 cans of pineapple juice. Suppose you reach into the container and randomly select a can. What is the probability that you will pull a,
• apple Juice
• Grape Juice
• pineapple or orange juice

(11)Is taking 10% off a given item and then an additional 40% off the reduced price the same as taking 50% off the original price? Why or why not.

(12) Dave interviewed a number of students in his school regarding their favorite ice cream. Dave claimed that exactly 40% of the 37 students interviewed liked vanilla the best. Is it possible to determine whether David's claim is correct? Why or why not?