Evaluating Expressions and Operations

The video tutorial covers evaluating expressions using substitution, demonstrating with examples. It explains how to replace variables with given values, perform operations in the correct order, and handle exponents. The tutorial emphasizes the importance of following the order of operations and provides step-by-step solutions to various expression problems.

What is the first step in evaluating an expression when given the values of variables?

• Divide by the variable

• Multiply all numbers

• Use substitution

• Perform addition

Tags

CCSS.6.EE.A.2C

In the expression 3x - 2y + x, if x = -2 and y = 4, what is the result after substitution?

• -16

• -14

• -12

• -10

Tags

CCSS.HSA-SSE.A.1A

When you have a number next to two variables, what operation does it imply?

• Addition

• Division

• Subtraction

• Multiplication

Tags

CCSS.6.EE.A.2C

What is the result of the expression -2ab + 3 when a = -1 and b = -6?

• -9

• -12

• 9

• 12

Tags

CCSS.5.OA.A.1

CCSS.5.OA.A.2

What is the first operation to perform according to the order of operations?

• Multiplication

• Addition

• Subtraction

• Parentheses

Tags

CCSS.6.EE.A.1

In the expression (4 + 5)^2, what is the result of the operation inside the parentheses?

• 8

• 9

• 10

• 11

Tags

CCSS.6.EE.A.1

What is the result of 9^2?

• 99

• 81

• 27

• 18

Tags

CCSS.6.EE.A.2C

In the expression 5c^3, if c = -2, what should be calculated first?

• 5 plus -2

• 5 minus -2

• -2 to the third power

• 5 times -2

Tags

CCSS.6.EE.A.1

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

• -8

• 8

• -6

• 6

Tags

CCSS.7.NS.A.2C

What is the final result of 5 times (-2)^3?

• 20

• -20

• 40

• -40

Tags

CCSS.7.NS.A.2C