Sample Final Exam
I. PROBLEM SOLVING.

1. A bookstore has a summer sale. All items are reduced 25% in price. After the sale prices of unsold items are marked up 25% of the sale price. If a book cost $60.00 orginally --

 a) How much did it cost during the sale? (4 points)

 b) How much would it cost after the sale if unsold? (4 points)

2. How many squares are there with corners at points on the following array? (8 points)

3. Shirley's parents are taking her to New Orleans for 5 days. At the time of year that they are going, the probability of rain on any given day is 20%. What is the chance that they will not have rain for the entire trip? (8 points)

4. A number of employees are enrolled in a fitness program. By March 2 4/5 of them were still participating. Of these 1/6 dropped out by May 2. Of the employees participating on May 2 9/10 were still there on July 2. If 90 employees were participating on July 2 how many started? (8 points)

5. A prisoner is given 10 white balls and 10 red balls and 2 boxes. He is told that his fate depends on the color of the ball picked from one of the two boxes. If it is red then he goes free. If it is white then back to the slammer. Each box has an equal chance to be picked and then a ball is picked at random. However, the prisoner can place the balls into the two boxes. How should he arrange the 20 balls in the two boxes and what is his chance of going free? (8 points)

6. A pilot of a small plane must make a round trip from A to B a distance of 300 miles. His plane has a speed of 150 mph. Today there is a wind from B to A of 50 mph. Tomorrow is predicted to be calm. Which day will have a quicker trip? (8 points)

7. If Jeff can paint a house in three days while Sue can paint one in four days, how long will it take the two of them to paint seven houses? (8 points)

II. DEFINITIONS Define each of the following terms. (4 points each)

 1. x is a prime number.

 2. a divides b or a|b.

 3. Scalene triangle

 4. The prefix killo

 5. The Pythagorean Theorem.

 6. Trapezoid

 7. Variance

 8. Mode

 9. Simple closed curve

10. Convex figure

III. TRUE/FALSE. ( 2 points each )

1. A kite is a parallelogram.

2. Any two diagonals of a regular polygon intersect inside the polygon.

3. An equilateral triangle is an isosceles triangle.

4. Any two distinct lines in a plane either intersect in a point or are parallel.

5. A square is a rhombus.

IV. FILL IN THE BLANKS. ( 3 points each )

1. Two angles the sum of whose measures is 180 degrees are called ___________.

2. The most common value in a set is called the ____________.

3. A scalene triangle is one which _________.

4. The metric quantity for measuring fields is _________

5. A regular quadrilateral is called a _______________.

V. MULTIPLE CHOICE. In each case, circle the letter of the best response. (4 points each)

1. What do the following numbers have in common? 357 819 1001

 a) They are all multiples of three

 b) They are all prime numbers

 c) They are all divisible by seven

 d) They have a common factor greater than 10

2. Which of the following has a non-terminating decimal representation in base ten? (8 points)

 a)

 b)

 c)

 d) None of these.

3. Which of these fractions is between and

 a)

 b)

 c)

 d)

4. If x is a positive integer then --

 a) -x is positive

 b) -(-x) = -x

 c) |-x| = x

 d) None of the above

5. If a is 50% of b then which of the following must be true?

 a) ab = 2

 b) a = 1 & b = 2

 c) b = 2a

 d) None of the above

6. In a class of 70 students 50% missed a certain question on a test. Of the students who missed the question 20% missed the same question on a retest. How many students missed the question twice?

 a) 70

 b) 35

 c) 14

 d) 7

7. If the 7 digit number 1, 336, 56_ is to be divisible by 6 then which of the following may be the missing digit?

 a) 4

 b) 5

 c) 6

 d) 7

8. A measure of a garage door's width would be?

 a) 12 cm

 b) 3 m

 c) 24 m

 d) None of these.

9. Which of the following number systems is positional?

 a) Babylonian

 b) Egyptian

 c) Mayan

 d) Roman

10. Which of the following concepts applies to ordinal data?

 a) Mean

 b) Variance

 c) Median

 d) Standard Deviation

VI. CONCEPTS.

1. If A and B are negative integers, and C is a positive integer, then determine whether each of the following are positive, negative, or undetermined. (2 points each)

 a) (-A) * (-B)

 b) A * (B-C)

2. Shade the Venn Diagram to represent . . .

(6 points)

3. 3. Arrange in order from smallest to largest. (5 points each)

 a) -1/3, 1/3, 0.333, 3%, -1/5

 b) -1/5, 2/3, 0.666, 66%, 0.667

4. Illustrate on a unit square model. (4 points)

5. Find the character in the 199th position of 0.(34786543120987856743) (6 points)

6. Show that 1/3 and 2/6 are equivalent fractions using unit squares. (4 points)

7. Given the following set of data:

           { 2, 2, 2, 3, 3, 3, 4, 4, 4, 5, 5, 6, 7, 7, 7, 7, 8, 9, 9, 9 }

 a) Determine the mean. (3 points)

 b) Determine the median. ( 2 points)

 c) Determine the mode. ( 2 points)

8. How many different 1-1 correspondences are there between two six element sets? (3 points)

9. What are the two numbers before and after 54 in base six. (3 points)

____, ____, 54, ____, ____

10. For each case below, write the number of the whole number property which justifies the statement. (2 points each)

a) 1 x 2 = 2 x 1 1)Closure +
b) 5 + 0 = 5 2)Closure x
c) 7 x (3+5) = (3+5 ) x 7 3)Commutativity +
d) 5 + 3 = 3 + 5 4)Commutativity x
e) 1 x 6 = 6 5)Associativity +
f) 3 x ( 7 + 5 ) = ( 3 x 7) + ( 3 x 5 ) 6)Associativity x
7)Identity +
8)Identity x
9)Distributive Property

11. For data which is normally distributed, what portion of the data is between the median and two standard deviations above the median? ( 3 points )

12. For data which is normally distributed, what portion of the data is below two standard deviations above the mean? ( 3 points )

13. When 100 students took a test the mean score was 92.3. Two students took a makeup. The mean of their two scores was 77. What is the combined mean of the two sets of 102 scores? ( 6 points)

14. For data which is normally distributed, how many standard deviations above the mean would represent the 99th percentile? ( 3 points )

15. Consider a regular 16 sided polygon. Find the following angles. (3 points each)

 a) Central Angle

 b) Vertex Angle

 c) Exterior Angle

VII. COMPUTATION.

SHOW YOUR WORK WHENEVER POSSIBLE.

1. Determine if 10447 is prime or not. Explain your decision. (6 points)

2. Find the smallest n so that 8 cubed divides n!. (6 points)

3. Is 3,344,558,822 divisible by: (2 points each)

 a) 2?

 b) 3?

 c) 4?

 d) 5?

 e) 6?

 f) 9?

 g) 11?

 h) 12?

4. Write 3/7 as a repeating decimal. (5 points)

5. Write each of the following as fractions. (5 points each)

 a) 0. 2 3 (2 3)

 b) 0.342(42)

 c) 0.342(525)

6. Write 3 5/7 as a fraction.(3 points)

7. 20% of 25% is what? (4 points)

8. Find a fraction between and . (4 points)

9. Give an irrational number between 1 & 2

10. Complete the below table. Fractions do not have to be expressed in lowest terms. Decimals should be to at least 4 places percents to at least 2 places. ( 3 points per blank.)

11. 2 percent of 106 is what? (3 points)

12. 48 is 120% of what? (3 points)

13. Change MCMLXXIX to Hindu-Arabic numerals. (4 points)

14. Change 56374 to each of the following systems. (6 points each)

 a) Mayan

 b) Babylonian

 c) Egyptian

15. Write in Hindu Arabic numerals each of the following numbers: (6 points each)

 a) Babylonian . . .

 b) Mayan . . .

 c) Mayan . . .

16. Calculate the following by the algorithm of your choice in Base 5. (Do not convert to base 10) (4 points)

    1 3 1 4

     - 4 3 1

17. Divide in base six. (6 points)

     34 x 1 = 34

     34 x 2 = 112

     34 x 3 = 150

     34 x 4 = 224

     34 x 5 = 302

18. Multiply 3 4 by 4 2 in base eight by lattice multiplication. (6 points)

19. Change 5492 to base nine notation. (4 points)

20. Change 2322(four) to base ten notation. (4 points)

21. Change 599 to base eleven notation. (4 points)

22. Multiply 34 by 46 in base twelve. (4 points)

23. Multiply 46 by 54 in base seven. (4 points)