QUIZ 7
Name
1. Use the intermediate addition algorithm to add these two:
258
+ 149
627
+ 485
.
2. Use one of the intermediate algorithms for multiplication to slove the following:
237
48
617
896
.
3. Use the digits 1 through 9 to make an addition proble
QUIZ 3
Name
1. Let A = cfw_2, 4, 6, 8, 10, 12, ,
cfw_55, 65.
B = cfw_4, 8, 12, 16, 20, ,
C = cfw_60, 70, 80, and
D=
Find each of the following.
(a) A B .
(b) B A
2. Let A = cfw_h, i, j, k, l, m,
B = cfw_d, e, g, i, k, n,
(a) Are A and B equal?
(b) Are B a
QUIZ 2
Name
1. Would you rather work for a month (30 days) and get paid one million dollars or be paid 1
cent the frist day, 2 cents the second day, 4 cents the third day, 8 cents the fourth day, and
so on? Explain your answer.
2. Write out the rst sixtee
EXAM 1
Math 106
August 22, 2011
Name
You must show all your work. Partial credit will be given.
1. Let U = cfw_1, a, 2, b, 3, c, 4, d, 5, 11, 12, 13, 14,
A = cfw_1, 2, 3, 4, 5, a,
B = cfw_a, b, c, d, 12, 13, 14, and
C = cfw_1, d, 11.
(a) Find A B (5 pts)
EXAM 2
Math 151
August 22, 2011
Name
You must show all your work. Partial credit will be given.
1. Is the set cfw_0, 10, 20, 30, 40, . . . closed under addition? Multiplication? Is the set cfw_5, 7, 9, 11, . . .
closed under addition? Multiplication?
2.
EXAM 3
Math 151
August 22, 2011
Name
You must show all your work. Partial credit will be given.
1. Is 13075 divisible by 15? Is 31,024,456 a multiple of 4? Explain your reasoning, do NOT
multiply or divide.
2. Find factor trees for each of the numbers 159
QUIZ 4
Name
1. Change each of the following numerals into Egyptian numerals.
23
451
2. Change each of the following to Mayan numerals.
49
1741
3. Change the following Roman numerals into our Hindu-Arabic numerals.
4. Change each of the following to Mayan
QUIZ 5
Name
1. Translate the numbers 13, 72 and 122 into Roman and Mayan numerals.
2. Let U = cfw_1, 2, 3, 4, . . . , 20, A = cfw_2, 4, 6, . . . , 18, 20, B = cfw_6, 7, 8, . . . , 14, 15, and C =
cfw_3, 5, 7, 9. Find
(a) B C ,
(b) A,
(c) A C .
3. Write th
QUIZ 9
Name
1. Three-fths of a class of 25 students are girls. How many girls are there in the class. (You
must show steps here, an answer from your calculator is not enough.)
2. Find the quantity
99
43
9
+
and the quantity
22 121
54
3
8
324
3. Calculate
QUIZ 8
Name
1. Which of the following numbers is the sum of two prime numbers?
7, 17, 27, 37, 47, . . .
2. For each of the following determine whether it is true or false. Explain your reasoning, do
not divide.
(a) 3|134, 667
(b) 12|32, 304
3. Find GCF (3
QUIZ 6
Name
1. For the following base six subtraction problem, rewrite the problem as a missing addend
problem and nd the solution to the problem.
12six 4six =
2. Suppose that S is a set of numbers that is closed under the addition operation. S contains
t
QUIZ 1
Name
1. Using a 5-minute and an 8-minute hourglass timer, can you measure exactly one minute?
Explain.
2. Find the digits A, B, C and D that solve the following cryptarithm.
ABCD
4
DCBA
3. A certain type of gutter comes in 6-foot, 8-foot and 10-foo