7th Grade Math NC Check In 1 Review

Front

What is the formula to calculate the final temperature after a series of temperature changes?

Back

Final Temperature = Initial Temperature + (Sum of all temperature changes)

Front

How do you calculate the total cost of an item after applying a percentage discount and then adding sales tax?

Back

Total Cost = (Original Price - Discount) + Sales Tax on discounted price

Front

What is the formula to calculate a tip based on a restaurant bill?

Back

Tip = Bill Amount x Tip Percentage

Front

What does the constant of proportionality (k) represent in a linear equation?

Back

It represents the ratio of y to x in the equation y = kx.

Front

How do you determine which product is a better buy based on price per unit?

Back

Calculate the price per unit for each option and compare them.

Front

What is the process for calculating a percentage decrease in temperature?

Back

Percentage Decrease = (Decrease Amount / Original Amount) x 100%

Front

How do you convert a percentage discount into a decimal for calculations?

Back

Divide the percentage by 100 (e.g., 15% becomes 0.15).

Front

What is the significance of the 7% sales tax in a purchase calculation?

Back

It is an additional cost added to the total price of the item after discounts.

Front

How do you calculate the total cost of a meal including tip?

Back

Total Cost = Bill Amount + (Bill Amount x Tip Percentage)