Adding and Subtracting Integers Explained

The video tutorial covers the objective of adding and subtracting integers. It begins with a review of integers, including examples and non-examples, and explains how to conceptualize integers using temperature and money. The concept of absolute value is introduced, followed by detailed steps for adding and subtracting integers. The tutorial includes practice problems and concludes with solving word problems using integer operations.

Which of the following is an example of an integer?

• 0.75

• 5/1

• -3/2

• 1.5

If the temperature is -5 degrees, how would you describe it?

• Very cold

• Cold

• Warm

• Very hot

What is the absolute value of -8?

• -1

• 8

• 0

• -8

How far is the number -6 from zero?

• 12 units

• 0 units

• -6 units

• 6 units

What is the first step when adding or subtracting integers?

• Change to subtraction

• Ignore the signs

• Change to addition

• Take the sign of the smaller number

When adding 7 and -9, what is the sign of the result?

• Undefined

• Zero

• Negative

• Positive

What is the result of -3 + 10?

• -13

• 7

• -7

• 13

How do you handle subtraction of integers?

• Subtract the smaller number from the larger number

• Keep the sign of the first number, change subtraction to addition, and change the sign of the second number

• Ignore the signs

• Change both signs to positive

If a stock price goes from 17.82 to 15.36, what is the change in price?

• 2.46 decrease

• 1.46 increase

• 2.46 increase

• 1.46 decrease

What is the difference in elevation between Mount Everest (29,028 ft) and the Dead Sea (-1,312 ft)?

• 27,716 ft

• 30,340 ft

• 28,340 ft

• 31,340 ft