Practical Problems Review (SOL 7.2)

Front

What is the formula to calculate the total distance descended when moving from a height above sea level to a depth below sea level?

Back

Total Distance Descended = Height Above Sea Level + Depth Below Sea Level

Front

If a climber descends from 533 feet to 10 feet below sea level, how do you calculate the total descent?

Back

Total Descent = 533 feet + 10 feet = 543 feet.

Front

How do you calculate the total cost of multiple items purchased at different prices?

Back

Total Cost = (Price of Item 1 x Quantity) + (Price of Item 2 x Quantity) + ...

Front

Marcel bought two candy bars for 79¢ each, three sodas for $1.29 each, and one bag of chips for $2.39. How do you find out how much change he receives from a $20 bill?

Back

Total Cost = (2 x 0.79) + (3 x 1.29) + 2.39; Change = $20 - Total Cost.

Front

What is the average temperature if the all-time average is -3°F and the January 2018 temperature was 19 degrees colder?

Back

January 2018 Temperature = All-time Average - 19°F = -3°F - 19°F = -22°F.

Front

How do you calculate the percentage of a total?

Back

Percentage = (Part / Whole) x 100.

Front

If 30% of 20 trees are taller than the roof, how do you find the number of trees not taller than the roof?

Back

Number of Trees Not Taller = Total Trees - (Total Trees x Percentage Taller) = 20 - (20 x 0.30) = 14.

Front

What is 40% of 2,600 customers?

Back

40% of 2,600 = 0.40 x 2,600 = 1,040 customers.

Front

How do you find the change received after a purchase?

Back

Change = Amount Paid - Total Cost.

Front

What is the significance of understanding negative numbers in real-life situations?

Back

Negative numbers represent values below zero, such as temperatures below freezing or depths below sea level.