Adding and Subtracting Temperatures

This lesson covers the addition and subtraction of signed numbers using temperature changes as a context. It includes activities with number lines to visualize the process and solve real-world problems involving temperature differences. The lesson emphasizes understanding the absolute value and sign rules when adding or subtracting positive and negative numbers.

What is the main focus of the lesson introduced in the video?

• Dividing signed numbers

• Subtracting signed numbers

• Adding signed numbers

• Multiplying signed numbers

If you start at 40 degrees and get 10 degrees warmer, what is the final temperature?

• 10 degrees

• 15 degrees

• 50 degrees

• 30 degrees

What is the result of starting at 40 degrees and going 50 degrees colder?

• Negative 50 degrees

• 0 degrees

• 10 degrees

• Negative 10 degrees

Starting at negative 20 degrees, what is the final temperature after getting 30 degrees warmer?

• Negative 10 degrees

• 20 degrees

• 10 degrees

• 0 degrees

What is the final temperature if you start at negative 20 degrees and go 15 degrees warmer?

• 0 degrees

• Negative 35 degrees

• 5 degrees

• Negative 5 degrees

How do you determine the sign of the result when adding a negative and a positive number?

• Always positive

• Always negative

• The sign of the smaller absolute value

• The sign of the larger absolute value

What is the temperature in Orlando if it is 10 degrees warmer than 8 degrees in Houston?

• 10 degrees

• 18 degrees

• 20 degrees

• 8 degrees

If the temperature in Minneapolis is 20 degrees colder than 8 degrees in Houston, what is the temperature in Minneapolis?

• Negative 12 degrees

• 0 degrees

• 12 degrees

• Negative 8 degrees

What is the temperature in Fairbanks if it is 10 degrees colder than negative 12 degrees in Minneapolis?

• Negative 22 degrees

• Negative 2 degrees

• Negative 10 degrees

• Negative 20 degrees

How do you find the result when the signs of two numbers being added are the same?

• Find the sum and keep the sign

• Find the difference and keep the sign

• Always negative

• Always positive