Evaluating Expressions and Equivalence

This lesson covers the concepts of equal and equivalent expressions. It includes drawing diagrams for expressions like x+3 and 2x with different values of x, comparing expressions such as 4x and 15+x, and checking the equivalence of 2b+b and 3b. The lesson also involves solving an equation where 80% of x equals 100 and solving story problems using equations.

What is the main focus of Unit 6 Lesson 8?

• Studying probability

• Learning about geometry

• Understanding fractions

• Exploring equal and equivalent expressions

How many squares represent x + 3 when x is 1?

• 3 squares

• 2 squares

• 5 squares

• 4 squares

How many squares represent 2x when x is 1?

• 2 squares

• 1 square

• 4 squares

• 3 squares

When x is 2, how many squares does x + 3 cover?

• 6 squares

• 7 squares

• 4 squares

• 5 squares

When x is 2, how many squares does 2x cover?

• 6 squares

• 3 squares

• 4 squares

• 5 squares

For x = 3, what is the total number of squares for x + 3?

• 5 squares

• 8 squares

• 7 squares

• 6 squares

For x = 3, what is the total number of squares for 2x?

• 6 squares

• 5 squares

• 8 squares

• 7 squares

When x is 4, how many squares does x + 3 cover?

• 9 squares

• 8 squares

• 7 squares

• 6 squares

When x is 4, how many squares does 2x cover?

• 6 squares

• 7 squares

• 8 squares

• 9 squares

In which scenario are x + 3 and 2x equal?

• x = 4

• x = 3

• x = 2

• x = 1