Calculating Differences in Elevation and Rainfall

The video tutorial covers various practice problems involving addition and subtraction, focusing on calculating differences in elevation, handling negative numbers, and understanding bank transactions. It also explores calculating differences between actual and average rainfall. The tutorial emphasizes the importance of starting with the end value and using subtraction to find differences.

What is the first step in solving a problem involving changes in elevation?

• Divide the end value by the initial value.

• Multiply the initial value by the change.

• Start with the end value and subtract the initial value.

• Start with the initial value and add the change.

How do you calculate the difference in elevation between 500 meters and -400 meters?

• Subtract 400 from 500.

• Subtract -400 from 500.

• Add 500 and 400.

• Add 500 and -400.

When dealing with negative values in elevation problems, what is important to consider?

• The reciprocal of the numbers.

• The logarithm of the numbers.

• The square root of the numbers.

• The absolute value of the numbers.

In a problem where the elevation changes from 8,500 meters to 3,400 meters, what is the final result?

• -11,900 meters

• 11,900 meters

• -5,100 meters

• 5,100 meters

How do you determine the change in elevation between 8,500 meters and -300 meters?

• Add 8,500 and -300.

• Subtract 8,500 from -300.

• Add 8,500 and 300.

• Subtract -300 from 8,500.

What is the result of subtracting 450 from -200 in an elevation problem?

• -650

• 650

• -250

• 250

In a bank transaction problem, if you start with $337.50 and end with $182.35, what is the missing transaction amount?

• $519.85

• -$519.85

• -$155.15

• $155.15

How do you solve for a missing transaction amount when the account balance changes from $182.35 to -$41.50?

• Subtract $223.75

• Add $140.85

• Subtract $140.85

• Add $223.75

What is the difference between the average and actual rainfall if the average is 0.67 inches and the actual is 0.17 inches?

• 0.67 inches

• 0.34 inches

• 0.84 inches

• 0.50 inches

If the average rainfall in July is 1.5 inches and the departure from average is -0.36 inches, what is the actual rainfall?

• 1.50 inches

• 1.14 inches

• 1.86 inches

• 0.86 inches