7th Grade Review

Front

What is the formula to calculate tax?

Back

Tax = Price × Tax Rate

Front

How do you calculate 125% of a number?

Back

Multiply the number by 1.25.

Front

What is the probability of an event not occurring?

Back

P(not A) = 1 - P(A)

Front

If the probability of an event is 30%, what is the probability that it will not happen?

Back

70%.

Front

How do you find the probability of two independent events occurring in sequence?

Back

Multiply the probabilities of each event.

Front

What is the probability of selecting a brown cow from a group of cows?

Back

Number of brown cows / Total number of cows.

Front

What is the total number of cows if there are 5 brown and 10 white cows?

Back

15 cows.

Front

How do you convert a percentage to a decimal?

Back

Divide the percentage by 100.

Front

What is the first step in solving a percentage problem?

Back

Identify the base value and the percentage.

Front

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

Back

The event cannot occur.