Math Practice for the Final Exam

Students, my computer is dead. Please be patient with me the next two weeks, as I will have to share Warren's netbook with him. It's a very sad day. It took me a long time to post these math reviews because my computer stopped working while I was writing.

Sorry!

1. There are 167 students at LPV. Each teacher has 16 students in her class. How many teachers will have a group of 16 students? How many students will NOT be in a group of 16 students?


2. Andres needs to buy 450 forks for a party. Each package has 24 forks in it. How many packages should Andres buy?


3. Write a numerical expression to show this sentence: “Antonio bought 23 shirts for $3 each."


4. Write an ALGEBRAIC expression for this sentence: “Luis has 18 pairs of socks. He took his shoes off at school and destroyed 5 pairs of socks. Then his mom bought him more socks.”


5. Write an ALGEBRAIC expression for this sentence: “Manuela has eight times more earrings than necklaces.”


Matching.
Directions: Match each numerical expression to the correct property.

1. _________ 9 x 1 = 9 and 320 + 0 = 320

2. _________ 9 x 8 = 8 x 9

3. _________ (3 x 4) x 12 = 3 x (4 x 12)

4. _________ 1,875,457 x 0 = 0


a. zero property

b. commutative property

c. identity property

d. associative property


Directions: Solve the problem. Write an algebraic equation for each problem, and then solve the problem.


1. Juan is 3 times older than his brother, Jose. Juan is 12. How old is Jose?

2. Warren saved $20 to buy a new camera. In June, he made more money. Let “m” represent how much money he made. At the end of June, he had $128 . Write and solve an equation to find out how much money Warren made in June.


Write an equation, or “rule” for the function. Then complete the table.

X 2 4 6 8
Y 6 12 18 k

What is the rule? (Use x and y in an algebraic expression.)

What is K?

Solve:

Divide, and check with multiplication.
1. 444 ÷ 7
2. 3972 ÷ 22
3. 9950 ÷ 50
4. 424 ÷ 8
5. 861 ÷ 21

Estimate:
1. 489 ÷ 21
2. 1308 ÷ 62

Solve:

1. 7 x 2 + 1
2. 8 + 9 x 3
3. 7m-4 if m=8
4. 11 + (15 ÷ c) if c=3

Solve for the missing letter (variable):
1. x + 12 = 33
2. 4m = 56
3. 99 ÷ r = 9

Which of the numbers 10, 12, and 14 are solutions to each inequality?
1. x < 11
2. f + 3 < 15
3. a - 2 > 5
4. d + 8 < or = to 20

I will post the answers tonight.

For extra credit: Email the answer to this problem.
Melody has two types of candy. She has 26 pieces of candy. The product of each type is 153. What are the two numbers?