Probability and Rational Numbers Review

True or False: All counting numbers are integers.

• True

• False

What is the difference between whole numbers and counting numbers?

• Whole numbers include zero and counting numbers do not.

• Counting numbers include zero and whole numbers do not.

• Whole numbers include negatives and counting numbers do not.

• Counting numbers include negatives and whole numbers do not.

True or False. Rational numbers have decimals that repeat or terminate.

• True

• False

True or False. All integers are whole numbers

• True

• False

A math game is played with a fair number cube and a spinner with 4 equal sides colored purple, blue, red and green. What is the probability of rolling and even number and spinning red?

• 1/6

• 1/8

• 1/12

• 1/24

Cristina has a bag with 2 red marbles, 3 green marbles and 3 white marbles. What is the probability of randomly pulling out a red marble, not replacing it, then pulling out a green marble?

• 1/9

• 1/56

• 3/28

• 3/32

The spinner above was spun 50 times. What is the experimental probability of spinning a 4?

• 1/5

• 3/10

• 6/25

• 13/50

Using the tree diagram above, how many different combinations of ice cream are there?

• 4 combinations

• 8 combinations

• 10 combinations

• 12 combinations

How many possible outcomes can be made when you have a standard dice and a spinner pictured like the one above? (hint: use the counting principle)

• 12 combinations

• 18 combinations

• 48 combinations

• 72 combinations

Kathy recorded that 2 out of 15 seventh graders attend tutorials on Saturdays. Based on the results, how many 7th graders out of 300 can you expect to come to Saturday tutorials?

• 17

• 30

• 40

• 65