Multiplication and Exponents Concepts

Miss Caster introduces evaluating expressions involving integers. She demonstrates how to evaluate y squared when y equals 4, resulting in 16. Next, she evaluates x cubed plus 5 with x as -2, resulting in -3. Finally, she evaluates 2 times m squared with m as -5, resulting in 50. Students are then encouraged to practice similar problems independently.

Why is it important to read the directions when evaluating expressions?

• To ensure you understand the problem

• To skip unnecessary steps

• To avoid doing any calculations

• To find shortcuts

What is the result of 4 squared?

• 8

• 12

• 16

• 20

If y equals 4, what is y squared?

• 16

• 4

• 8

• 12

What is the first step in solving x cubed plus 5 when x equals -2?

• Add 5 to x

• Cube x

• Square x

• Subtract 5 from x

What is the result of -2 cubed?

• -8

• 8

• -4

• 4

What do you get when you add 5 to -8?

• 5

• 0

• 3

• -3

What is the result of 4 times -2?

• -8

• 8

• 0

• 2

What is the result of negative eight plus five?

• 5

• 3

• 0

• -3

What is the result of m squared when m equals -5?

• -10

• -25

• 10

• 25

What is the result of 2 times 25?

• 75

• 25

• 50

• 100