Lisa had $100. She then bought $40 worth of groceries. Write an expression to represent how much money Lisa has.
100 - 40
100
Determine if x = 7 is a solution to the equation (explain your thinking or show your work).
2x + 5 = 20
No. If 2(7) + 5 = 19 not 20.
100
Solve x - 7 < 8
x < 15
100
It is the Property demonstrated by these equations:
4 + 0 = 4
5 x 1 = 5
Identity Property
100
What are used to show which operations in an expression should be done first?
Parentheses
200
Evaluate the expression 4 x 2 + (8-6) - 9
1
200
Solve the solution 8+y = 29 and check your solution.
Solve the equation x/4 = 12 and check your solution.
y=21
200
Solve 104 > 8x and graph the solution set.
13 > x
200
It is the Property demonstrated by this equation:
(2 x 3) x 4 = 2 x (3 x 4)
Associative Property of Multiplication
200
Name the four symbols that represent an inequality.
Ms. Taylor will write them on the board.
300
Evaluate (20 / f )(v) for f = 5 and v = 13.
52
300
Solve the equation x/4 = 12 and check your solution.
x=48
300
There are no more than twelve correct answers to the question.
Answer must be written on board.
300
Use the distributive property to rewrite the expression: 7(6x+11)
42x + 77
300
What is a number sentence that says two expressions do not have the same value?
Inequality
400
Evaluate (3g + r)(y) for g = 5, r = 2 and y = 11.
37
400
Solve the equation and check your solution: 18.9 = x - 8.3
x = 27.2
400
y/9 < 1/3
1) Solve the inequality.
2) Give 3 solutions that make the inequality true.
1) y < 3
2) (answers will vary) y=2,1,-4
400
It is the Property demonstrated by these equations:
5(3 + 5) = 5(3) + 5(5) = 15 + 25 = 40
Distributive Property
400
What is a mathematical sentence with an equal sign?
Equation
500
Sarah charges $8.00 an hour to babysit.
1) Write an expression for describing her earnings.
2) How much will she earn if she babysits for 4 hours?
3) How long will it take her to earn 48 dollars?
1) 8h or 8xh or 8(h)
2) 8(4) = $32
3) 8h = 48
8h/8 = 48/8
h = 6 hours
500
How many boxes of envelopes can you buy
with $12 if one box costs $3?
1) Write an algebraic equation to represent the problem.
2) Find the solution.
1) 3b = 12 (e represents the number of boxes of envelopes)
2) b = 4 boxes
500
Write an inequality for the following situation:
The difference between Sadie's candy pile of 65 pieces and Daniel's candy pile is more than 20 pieces of candy.
65 - d > 20
500
1) It is the property with the name that makes you think about traveling to and from work each day.
2) Give an example.
1) Commutative Property
2) (Answers will vary) 4+5 = 5+4 OR 5x1=1x5