Algebraic Expressions and Operations

Miss Go introduces module 3, focusing on generating equivalent expressions using properties like commutative and associative. The lesson covers defining variables and expressions, combining like terms, and using multiplication in expressions. Examples illustrate expanded and standard forms, subtraction, and order of operations. A word problem is solved to apply these concepts. The lesson concludes with a summary of key learnings.

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

• Associative Property

• Inverse Property

• Distributive Property

• Commutative Property

Which of the following is NOT a recommended variable symbol?

• Y

• Z

• T

• X

What distinguishes an algebraic expression from a numerical expression?

• It is always a single number

• It contains only numbers

• It includes variables

• It uses only addition

How many X's are there in the expression 5x + 3x?

• 3

• 2

• 5

• 8

What is the result of multiplying 3 by 2x?

• 3x

• 2x

• 6x

• 5x

What is an expression in expanded form?

• A single number

• A product of numbers

• A sum or difference of products

• A variable alone

What is the result of subtracting 30 + 2 from 40 + 9?

• 49

• 17

• 32

• 9

How much will Margo pay if she uses the storage unit for 6 months?

• $102

• $114

• $120

• $108

What is the key takeaway about combining like terms?

• They can be combined in any order

• They are always constants

• They must have the same variable and power

• They cannot be combined