Unit 3: Fractions & Probability Review

Front

What is probability?

Back

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

Front

What does it mean if an event is 'likely'?

Back

An event is 'likely' if it has a greater chance of happening than not happening, usually represented by a probability greater than 0.5.

Front

If there are 5 pink starbursts in a bag of 10 total starbursts, what is the probability of drawing a pink starburst?

Back

The probability is 5/10 or 1/2.

Front

What fraction represents the chance of drawing a non-pink starburst if there are 5 pink starbursts in a bag of 10?

Back

The probability of drawing a non-pink starburst is also 5/10 or 1/2.

Front

How do you calculate the probability of an event?

Back

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

Front

What fraction represents the chance of drawing a pizza sticker if there are 6 pizza stickers out of 9 total stickers?

Back

The probability is 6/9 or 2/3.

Front

If Jacob is likely to choose a green marble, what fraction could represent the number of green marbles if there are 10 marbles total?

Back

A possible fraction is 8/10.

Front

What fraction of a pie does each person get if 6 pieces of pie are shared among 12 people?

Back

Each person gets 1/2 of a piece of pie, which is 6/12.

Front

What does it mean if an event is 'impossible'?

Back

An event is 'impossible' if it has a probability of 0, meaning it cannot happen.

Front

What does it mean if an event is 'unlikely'?

Back

An event is 'unlikely' if it has a probability less than 0.5.