7.SP.7 & 7.SP.8 AIR Review Items

Front

What is probability?

Back

Probability is a measure of the likelihood that an event will occur, expressed as a number between 0 and 1.

Tags

CCSS.7.SP.C.5

Front

How do you calculate the probability of an event?

Back

Probability of an event = (Number of favorable outcomes) / (Total number of outcomes).

Tags

CCSS.7.SP.C.7A

Front

What is the probability of drawing a blue marble from a bag containing 15 blue, 8 green, and 7 red marbles?

Back

15/30 or 1/2.

Tags

CCSS.7.SP.C.7B

Front

If a bag contains 6 red, 5 blue, and 4 green marbles, what is the probability of selecting a blue marble?

Back

5/15 or 1/3.

Tags

CCSS.7.SP.C.7B

Front

What is the combined probability of two independent events?

Back

The combined probability is the product of the probabilities of each event.

Tags

CCSS.HSS.CP.A.2

CCSS.HSS.CP.A.4

Front

What is the probability of selecting a blue marble from two bags, one with 5 blue marbles and the other with 2 blue marbles?

Back

(5/15) * (2/9) = 10/135 or 2/27.

Front

How do you find the probability of selecting a boy from a class of 12 boys and 14 girls?

Back

Probability = 12/(12+14) = 12/26.

Tags

CCSS.7.SP.C.7B

Front

What is the probability of rolling an even number on a number cube (1-6)?

Back

3/6 or 1/2.

Tags

CCSS.7.SP.C.7B

Front

What is the probability of rolling an even number followed by a 3 on a number cube?

Back

(1/2) * (1/6) = 1/12.

Front

How do you calculate the probability of selecting a chocolate chip or peanut butter cookie from a bag of 25 cookies?

Back

Probability = (15 + 7) / 25 = 22/25.

Tags

CCSS.HSS.CP.B.7