Understanding Negative Numbers and Operations

This video tutorial covers Unit 5, Lesson 13 on expressions with rational numbers. It begins with an introduction and overview, followed by bellwork exercises and true/false questions. Students engage in a card sort activity using Desmos and work on exercises from page 120 involving calculations with variables a and b. The lesson includes a review of exercises, questions about the largest and smallest values, and concludes with a website activity and practice problems for further learning.

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

• Depends on the context

• False

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

• Positive

• One

• Negative

• Zero

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

• It becomes a larger negative number

• It becomes a positive number

• It remains unchanged

• It becomes a smaller negative number

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

• Negative one-half

• Zero

• One-half

• One

What is the result of a squared if a is negative one-half?

• Negative one-fourth

• One-fourth

• Zero

• One

What is the largest value when a is negative one-half and b is six?

• b to the third power

• a divided by negative b

• Negative a

• Negative 4b

Which expression has the smallest value when a is negative one-half and b is six?

• Negative 4b

• b to the third power

• a divided by negative b

• Negative a

Where is the dragonfly located if d equals negative b?

• At b

• At negative b

• At zero

• At positive b

What happens to the jellyfish's position if j is twice b?

• It stays at the same position

• It moves closer to zero

• It moves twice as far from zero

• It moves to zero