7th Grade Math Semester 1 Review

Front

What is the formula to calculate the total amount in a bank account after withdrawals and deposits?

Back

Total Amount = Initial Amount - Withdrawals + Deposits.

Front

If a pair of shoes is marked down from $70 to $49, how do you calculate the discount percentage?

Back

Discount Percentage = ((Original Price - Sale Price) / Original Price) * 100.

Front

What is a proportional relationship in mathematics?

Back

A proportional relationship is one where two quantities maintain a constant ratio.

Front

How do you convert speed from kilometers per minute to kilometers per hour?

Back

Multiply the speed in km/min by 60.

Front

What is the total cost for renting bowling shoes, playing games, and buying sodas for 8 friends?

Back

Total Cost = (Cost of Shoes + Cost of Games + Cost of Sodas) * Number of Friends.

Front

How do you find the distance traveled if you know the speed and time?

Back

Distance = Speed × Time.

Front

What is the equation of a line that represents a proportional relationship?

Back

y = kx, where k is the constant of proportionality.

Front

How do you calculate the total cost of an item after applying a discount?

Back

Total Cost = Original Price - (Original Price × Discount Percentage).

Front

What is the average speed if a train travels 40 kilometers in 16 minutes?

Back

Average Speed = Distance / Time = 40 km / (16/60) hours = 150 km/h.

Front

What is the total cost for 8 friends renting shoes for $3 each?

Back

Total Cost = 8 friends × $3 = $24.