Subtraction of Rational Numbers in Real World (Part 2)

The video tutorial explains how to find the difference between two changes in height on Tuesday and Wednesday. It involves converting a subtraction expression into an addition one and solving it by finding a common denominator. The lesson concludes with the result and a recap of the subtraction of rational numbers in real-world scenarios.

What operation is necessary to find the difference between two values?

• Subtraction

• Addition

• Division

• Multiplication

How do you convert a subtraction problem involving negative numbers into an addition problem?

• By multiplying both numbers by -1

• By using the 'same, change, opposite' method

• By adding the absolute values

• By finding a common denominator

When adding numbers with different signs, what should you do?

• Subtract their absolute values and keep the sign of the larger number

• Add their absolute values and keep the sign of the larger number

• Multiply their absolute values

• Divide their absolute values

What is the common denominator used to subtract 9/10 and 5/8?

• 50

• 20

• 40

• 30

What is the final result of the difference between the changes on Tuesday and Wednesday?

• 11/20

• 11/40

• 9/40

• 5/8