Algebraic Expressions and Operations

This video tutorial by Miss Go introduces the first lesson in Module 3, focusing on generating equivalent expressions. It covers the commutative and associative properties, defining variables and expressions, combining like terms, and using multiplication and order of operations. The lesson also explains the difference between expanded and standard forms of expressions and includes a word problem example to apply these concepts. The tutorial concludes with a summary of key takeaways.

What property allows addition and multiplication to be performed in any order?

• Distributive Property

• Commutative Property

• Associative Property

• Inverse Property

What does multiplying by the reciprocal achieve in division problems?

• Forms a sum

• Forms a product

• Forms a difference

• Forms a quotient

Which of the following is NOT typically used as a variable due to its resemblance to a number or symbol?

• X

• S

• T

• E

What is the result of combining like terms in the expression 5x + 3x?

• 2x

• 15x

• 8x

• 5x

How do you simplify the expression 2x + 5x + 1?

• 7x + 1

• 2x + 5x

• 8x + 1

• 7x

What is the expanded form of the expression 3 * 2x?

• 2x + 2x + 2x

• 6x

• 5x

• 3x + 2x

Which of the following is an example of an expression in standard form?

• 3x + 5 - 4

• 5x + 5

• 40 + 9 - 30 + 2

• 2x + 3x + 5

What is the coefficient in the term 8x?

• x

• 8

• 0

• 1

How many terms are in the expression 2x + 3x + 5?

• 4

• 1

• 2

• 3

In the word problem, what is the expression for Margo's total cost after Carissa's contribution?

• 15m + 1

• 17m + 3

• 14m + 2

• 20m + 4