7th grade Math Review

Front

What is the equation to find the total cost of renting a paddle boat if the deposit is $15 and the hourly rate is $2?

Back

Total Cost = 15 + 2h

Front

Solve for t: -5t + 9 = 24

Back

t = -3

Front

How do you calculate the mean of a set of numbers?

Back

Mean = (Sum of all numbers) / (Total count of numbers)

Front

What is the mode of the following set of numbers: 12, 10, 10, 10, 13, 12, 11, 13, 10?

Back

Mode = 10

Front

How do you find the median of a set of numbers?

Back

1. Arrange the numbers in order. 2. If odd count, median is the middle number. If even count, median is the average of the two middle numbers.

Front

What is the formula for calculating the mean of these numbers: 2, 57, 38, 42, 6?

Back

Mean = (2 + 57 + 38 + 42 + 6) / 5 = 29

Front

What does it mean if a number is the mode in a data set?

Back

The mode is the number that appears most frequently in the data set.

Front

If the total cost of renting a boat is $33, what is the equation to find the number of hours rented?

Back

33 = 2h + 15

Front

What is the median of the following numbers: 4, 2, 7, 4, 3?

Back

Median = 4 (after arranging: 2, 3, 4, 4, 7)

Front

What is the first step in solving the equation -5t + 9 = 24?

Back

Subtract 9 from both sides: -5t = 15.