Integer Operations and Number Line Concepts

The video tutorial revisits the concept of integers, focusing on addition, subtraction, multiplication, and division without a calculator. It emphasizes using a number line for basic operations and explains handling double signs. The tutorial provides examples to illustrate the rules for determining the sign of the result based on the signs of the numbers involved.

What is the primary tool suggested for solving integer problems without a calculator?

• Calculator

• Graph paper

• Abacus

• Number line

If you start at 5 on a number line and move forward 3 spaces, where do you end up?

• 2

• 8

• -2

• 5

Using common sense, if you have 3 and lose 7, what is the result?

• -10

• 10

• 4

• -4

What is the result of -4 - 3 using a number line?

• -7

• -1

• 7

• 1

How do you handle a double sign like -2 + (-5)?

• Treat it as positive

• Rewrite as -2 - 5

• Rewrite as -2 + 5

• Ignore the signs

What is the result of 3 - (-2)?

• -5

• 5

• 1

• -1

What happens when you have two negative signs in a row, like in 3 - (-6)?

• It becomes a double negative

• It becomes zero

• It stays negative

• It becomes a positive

What is the result of -5 * 3?

• 0

• 5

• 15

• -15

When multiplying integers, what is the result if the signs are different?

• Negative

• Undefined

• Positive

• Zero

What is the result of 3 * -7?

• -21

• 7

• 21

• 0