Benchmark Test : Grade 7 Math. Class/Grade. Benchmark: MA.7.P.7.2

Transcription

1 Name lass/grade ate deck of playing cards has 5 cards, with cards in each of four suits: clubs, diamonds, hearts and spades. Each suit has cards numbered through 0, a jack, a queen, a king, and an ace. face card is a jack, queen, or king of any suit. f one card is drawn from a deck of playing cards at random, what is the probability that it will be a face card? Mario has a very disorganized sock drawer. nside, there are black socks and white socks. Without looking, Mario takes one sock out of the drawer and then takes out another. What is the probability that he will take out two white socks? 5 5 G 5 f you flip a coin three times in a row, what is the probability that it will lands on heads all three times? -0 Progress Testing Page

2 Gretchen is rolling a number cube. What is the probability of rolling a followed by a or a? G ntoine has a bag containing 5 green marbles, orange marbles, and purple marbles. Without looking, he pulls out one marble from the bag and keeps it. e then pulls out another marble from the bag. What is the probability that he will have purple marbles? G gum ball machine contains blue gum balls, red gum balls, and white gum balls. arl bought a gumball from the machine and received a white gumball. Next, red bought a gumball from the machine and received a blue gumball. Jenny will buy a gumball after red. What is the probability that Jenny will receive a blue gumball? 0 5 student rolls two six-sided number cubes. What is the probability that the sum of the numbers rolled will be equal to? -0 Progress Testing Page

3 ugh has a fair spinner with 0 areas of equal size. e labeled the areas with numbers such that the probability of the spinner landing on an even number is 0 the areas of the spinner?. ow could ugh have labeled The spinner shown below is spun twice. What is the probability that one spin lands on blue and one lands on green?,,,, 5,,,,, G,,,, 0,,,,, 0, 5,,, 0,,, 0, 5, 50 5, 0, 5, 0, 5, 5, 5, 50, 55, 5-0 Progress Testing Page

4 0 bag of candy contains an equal number of pieces of each of three colors: red, blue, and yellow. Nathan randomly selects pieces of candy from the bag. our of those pieces are red. ow does this result compare with the result that would be expected based on probability? The spinner shown below is spun twice. What is the probability that one spin lands on red and one lands on green? The number of red pieces of candy Nathan selected is equal to what would be expected. G The number of red pieces of candy Nathan selected is less than what would be expected. The number of red pieces of candy Nathan selected is greater than what would be expected. The question cannot be answered without knowing the exact number of pieces of candy in the bag. G Three fair coins are tossed at the same time. What is the probability that of the coins will show tails? -0 Progress Testing Page

5 student has a bag containing gumballs: red and yellow. The student reaches into the bag, pulls out a gumball, records the color, replaces the gumball, and repeats. The student has just drawn yellow gumballs in a row. Which of the following best describes the probability that the next gumball the student draws will be yellow? much less than 50% less than 50% exactly 50% more than 50% n math class, Lauren is doing a statistical experiment with a pair of number cubes. The matrix below shows all the possible outcomes of rolling the two number cubes. "double" occurs when both number cubes come up the same. What is the probability that Lauren will roll "doubles" two times in a row? G ( ) -0 Progress Testing Page 5

6 5 Kari tossed two fair coins at the same time. She repeated this trial 00 times. ccording to theoretical probability, how many trials should Kari expect to result in one coin showing heads and one coin showing tails? Progress Testing Page

7 Kyle has two spinners like those pictured below. e will spin each spinner one time. e will then add the two numbers together. The chart shows all the possible outcomes. What is the probability that the sum of the numbers from Spinners and will be either a or a 5? 0 G -0 Progress Testing Page

8 box contains permanent markers. There are 5 black markers, 0 blue markers, and red markers in the box. Mike picks a red marker from the box without looking and keeps it. Then Roger also picks a red marker from the box without looking and keeps it. Tim is about to pick a marker without looking. What is the probability that the marker he picks will be blue? 5 rancis painted two fair coins for a probability experiment. f the probability that both coins show red when flipped at the same time is, how could rancis have painted the coins? oin : one side blue, one side red oin : one side blue, one side red oin : one side blue, one side red oin : both sides red oin : one side blue, one side red oin : both sides blue 0 oin : both sides blue oin : both sides red 0 Karina will flip a nickel 00 times. Jorge pulls dollar bills from his wallet to pay for a movie ticket. s he does so, four single dollar bills fall to the ground. What is the probability that each bill will land with the picture of George Washington face up? G ow many times should Karina expect to get tails when she flips the nickel? 5 out of 00 G 50 out of 00 0 out of 00 5 out of 00-0 Progress Testing Page