1. (2+33)-42÷2•2-1
Solve

2. x3+2y2
• What operations do you see in the problem?
• What are the letters and what do they stand for?
• What would you need to know in order to evaluate this
expression?
• If I told you that x = 2 and y = 4, how would you proceed?
• What would you do with the 2 next to the y? Do you know
what mathematical name is for the number 2?
• (coefficient)

3. (2) 3 + 2(4) 2
• Why did I use parenthesis?
• (signals multiplication)
• With your partner, discuss the steps you would use to
solve the problem (1 min)
• Solve and prepare to share
• Share and discuss and differences

4. • Identify Terms:
• 3x4, 2y
• Identify Variables:
• 3x4, 2y
• Identify Coefficients:
• 3x4 2y
• Identify Grouping Symbols (Don’t forget the fraction “bar”):
• 3x4-2y/2
• Identify Exponents:
• 3x4-2y

5. • Evaluate the expression below when x=2 and
y=3
• Follow Order of Operations

6. • Now, let’s apply this to a problem solving
situation.
• Write an expression that represents the
following situation.
An orchard lets you pick your own apples. Sally
picked 5 large buckets and 3 small buckets.
Large buckets hold x apples and small buckets
hold y apples. Write an expression that would
represent the total number of apples Sally
picked.

7. • Evaluate the following algebraic expressions
according to the correct order of operations.
• 2x+y2 when x=7 and y=4
• (42-3) + 3x3 when x=3
• 5xy-4x2 when x=2 and y=8

8. • Write an expression using grouping symbols
to solve the problem.
Sam carpeted his bedroom floor. He spent
$1,350.00 on carpeting. The dimensions of his
bedroom are 15 ft by 18 ft. How much was
the cost of the carpeting per square foot?