Simple Probability

Front

What is probability?

Back

Probability is a measure of how likely an event is to occur, expressed as a number between 0 and 1.

Front

What is the probability of rolling a 7 on a single die?

Back

0 (A standard die has numbers 1-6, so rolling a 7 is impossible.)

Front

How do you convert a decimal to a percent?

Back

Multiply the decimal by 100 and add a percent sign. For example, 0.02 becomes 2%.

Front

What is the probability of spinning green if there are 4 equal sections: red, blue, green, yellow?

Back

1/4 (There is 1 green section out of 4 total sections.)

Front

What is the probability of flipping a coin and getting heads?

Back

1/2 (There are 2 possible outcomes: heads or tails.)

Front

What is the probability of spinning red if there are 2 red sections and 2 blue sections?

Back

1/2 (There are 2 red sections out of 4 total sections.)

Front

What does it mean if an event has a probability of 0?

Back

It means the event is impossible and will not occur.

Front

What does it mean if an event has a probability of 1?

Back

It means the event is certain to occur.

Front

If a spinner has 3 equal sections: red, green, and blue, what is the probability of landing on blue?

Back

1/3 (There is 1 blue section out of 3 total sections.)

Front

What is the probability of drawing a heart from a standard deck of cards?

Back

1/4 (There are 13 hearts in a deck of 52 cards.)