Evaluating Expressions
Equivalent Expressions
Combining Like Terms
Miscellaneous
100
When evaluating expressions what math rule do we need to remember to follow?
Order of Operations
100
Name at least one property of operations used to write equivalent expressions
What is...
the commutative property (of + or x)
a+b=b+a
the associative property (of + or x)
(a+b)+c=a+(b+c)
the distributive property (across + or -)
a(b+c)=a(b)+a(c)
100
Simplify 7.7w - 4.6w
What is 3.1w?
100
How do equations differ from expressions?
equations contain an equal sign (you can solve to find x) while expressions do not (you can plug values in for x).
Both can include #s/variables/operations
200
Evaluate the expression
3b - b when b=7
What is 14
200
8(4+2) = ?
48
200
Simplify 12y + 4 - 3y
What is 9y + 4?
200
Identify the variable or variables in the following expression:
6m + 17 - x2
What is m and x?
300
Evaluate the expression
6(½x - 1) when x=4
What is 6?
300
5(x - 3)
5x - 15
300
simplify 4x + 15 - 3x + 10
what is x + 25?
300
Identify the coefficient or coefficients in the following expression
-8b + 5.6
What is -8?
400
Evaluate the expression
x2 + 3x for x=1.5
What is 6.75
400
7 + 9(2x - 3)
7 + 18x - 27 (unsimplified)
OR
18x - 20
400
simplify
z4 + z4 + z4 + z4
what is 4z4
400
How many terms are in the following expression
7xy + 3y - z + 12
What is 4 terms
7xy, 3y, z, 12
500
Evaluate x2 + 2y ÷ w + 3z
for w=2, x=5, y=8 and z=3
42
500
How can you check to see if two algebraic expressions are equivalent?
Substitute a number for the variable---if they are equivalent the expressions will have the same value.
500
simplify 2p + ¾p + 6 - p - 3½
What is 1¾p + 2½
500
Guppy
Platy 
Mr. Bolden bought p platys and paid with a $10 bill. Write an algebraic expression to represent how much money he got back.
What is 10 - 2p?