Operations with Negative Numbers

This video tutorial covers Unit 5, Lesson 13 on expressions with rational numbers. It includes an introduction, bellwork exercises, a card sort activity using Desmos, and exercises from page 120. The lesson emphasizes understanding operations with signed numbers and evaluating expressions. Students are guided through various problems, including true/false questions and calculations with variables. The video concludes with a review of exercises, questions on largest and smallest values, and additional practice problems available on a website.

What is the result of multiplying a negative number by another negative number?

• Negative

• Positive

• Zero

• Undefined

If you subtract 99 from 10,000, is the result less than zero?

• True

• Cannot be determined

• False

• Depends on the context

What is the result of multiplying three-fourths by negative four-thirds?

• One

• Positive

• Zero

• Negative

In the card sort activity, what happens when you subtract a negative number?

• It becomes a larger negative number

• It becomes a smaller negative number

• It becomes a positive number

• It remains unchanged

What is the value of negative a if a is negative one-half?

• One

• One-half

• Zero

• Negative one-half

What is the result of dividing a negative number by another negative number?

• Negative

• Positive

• Undefined

• Zero

What is the result of squaring a negative number?

• Zero

• Negative

• Undefined

• Positive

Which expression had the largest value when a was negative one-half and b was six?

• Negative a

• A divided by negative b

• Negative 4b

• B to the third power

Which expression had the smallest value when a was negative one-half and b was six?

• B to the third power

• A divided by negative b

• Negative 4b

• Negative a

What is the opposite of a negative number?

• A larger negative number

• Zero

• A positive number

• Undefined