Download 1 centimeter = 0.393700787 in

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40 problems – 6 points each
Short Answer Questions — 10 points
250 points possible
1
Problem
Work and Solution
Perform the indicated addition.
4+8+6+7 = 25 (5 carry the 2)
2+5+4+7+8 = 26 (6 carry the 2)
2+8+3+0+5 = 18 (8 carry the 1)
1+5+2+7 = 15 (5 carry the 1)
1+2+3 = 6
25,854
348
2, 076
My
Comments
 37,587
= 65865
2
Do the indicated subtraction.
= 3 14 3 6 17
-2 5 0 5 8
44,377
3
 25, 058
= 19319
Divide. Show the remainder if applicable.
63/26 = 2 rem 11
Put the 11 onto the 4:
114
114/26 = 4 rem 10
= 24 rem 10
(72/8)-(9/3)
= 9-3
=6
26 634
4
Evaluate.
72  8  9  3
5a
Change 3
2
to an improper fraction.
5
5*3+2 = 15+2 = 17
17/5
1
5b
Find the decimal equivalent of the mixed
number.
8
7/8 = 0.875
So:
8.875
7
8
6
Add.
2 1 5
 
3 6 9
Common denom:
12/18 + 3/18 + 10/18
= (12+3+10)/18
= 25/18
7
Subtract.
4
6 1
5
= 30/5 – 9/5
= (30-9)/5
= 21/5
8
2 8
Multiply 4  . Write your answer in
7 11
simplest form.
= 30/7 * 8/11
= 240/77
9
Divide
6 2
 . Write the result in simplest
25 15
form.
10
Perform the indicated operations.
3
3
1
1 4 2
8
4
6
11
Add.
54.843  2.067  104.36
12
Multiply.
9.7
 4.9
Flip the second and multiply:
6/25 * 15/2
= 3/25 * 15
= 3/5 * 3
= 9/5
11/8 + 19/4 – 13/6
Common denominator:
33/24 + 114/24 – 52/24
(33+114-52)/24
= 95/24
54+2+104 = 160
.843+.067+.36 = 1.27
= 161.27
9.7
4.9
3
87
8
38
= 47.53
13
Divide.
0.8 14.12
14/8 = 1 rem 6
61/8 = 7 rem 5
52/8 = 6 rem 5
2
14
Find the circumference of a circle with a
radius of 5.5 in. Use 3.14 for and round
your answer to one decimal place.
15
Find the area of the figure.
16
Solve for the unknown:
s
12.0

.
36.0 2.4
17
97.3 is 7% of what number?
18
The two triangles are similar. Find the
indicated side.
Find y.
19
20
Complete the following statements. Show
the conversion factor.
A)
12 L = ________ qt
B)
13 oz = ________ g
C)
6 cm = ________ in.
Find the five-number summary of the
following set of numbers.
= 17.65
C = 2*pi*r
= 2*3.14*5.5
= 34.54
Rounds to:
= 34.5 inches
Big box = 12*15 = 180 ft^2
Little cutout = 4*5 = 20ft^2
Subtract:
180-20
= 160 ft^2
Cross multiply:
2.4s = 36*12
Divide by 2.4:
S = 36*12/2.4
S = 180
7% = 0.07
97.3/0.07
= 1390
Proportion:
y/5 = 8/10
Cross multiply:
10y = 40
Divide by 10:
y=4
1 liter = 1.05668821 US quarts
12L = 12.68025852 qt
1 ounce = 28.3495231 grams
13 oz = 368.5438003 g
1 centimeter = 0.393700787 in
6 cm = 2.362204722 in
Sort them:
2, 4, 6, 6, 6, 7, 9, 10, 11, 12
Low = 2
3
10, 4, 9, 12, 6, 11, 6, 2, 7, 6
21
Perform the indicated operations:
A) Add 281  (–672).
Q1 = 3rd = 6
Median = middle = (6+7)/2 = 6.5
Q3 = 8th = 10
High = 12
A: 281-672 = -391
B: -34-78 = -(34+78) = -112
C: (-14)(-6) = 14*6 = 84
B) Subtract 34  78
C) Multiply (7)(2)(6)
22
Determine the maximum and minimum
values of the following set of numbers.
1 5 9
73
2,  8, ,  , ,  7, 
2 3 4
9
23
4  3
Add      .
5  4
24
Perform the indicated operation.
–16  (–14)
–18  (–18)
25
Real World Problems
Porfirio went shopping for some clothes. He
bought a shirt for $57.98, a pair shoes for
$93.19, a hat for $25.95, a coat for $120.85,
and socks for $10.29. Estimate to the nearest
dollar the total amount of Porfirio's
purchases.
½ = 0.5
-5/3 = about -1.6666
9/4 = 2.25
-73/9 = about -8.1111
Max is 9/4
Min is -73/9
Common denominator:
-16/20 – 15/20
(-16-15) = -31, so:
-31/20
-16-(-14) = -16+14 = -2
-18-(-18) = -18+18 = 0
-2/0 = undefined
About 58 + 93 + 26 + 121 + 10
= $308
26
You wish to cover a bathroom floor with 1square-foot (1-ft2) tiles that cost $2 each. If
the bathroom is rectangular, 6 ft by 7 ft, how
much will it cost?
6by7 = 42 square feet
Each square foot costs $2:
$2 * 42
= $84
27
A college basketball team scored 67, 75, and
69 points in three games. If its opponents
scored 82, 62, and 55 points, by how much
did the team outscore its opponents?
(67+75+69)-(82+62+55)
= 12 points
4
28
29
Turner agrees to buy a boat for $2,800 down 2800 + 129*48
and $129 a month for 48 months. What is the = 2800 + 6192
total cost of the boat?
= $8992
1
3
hours Monday, 3
4
2
1
hours Tuesday, and 2 hours Wednesday.
4
What is the total number of hours that she
practiced?
Add them:
3/2 + 15/4 + 9/4
Common denom:
6/4 + 15/4 + 9/4
= (6+15+9)/4
= 30/4
= 15/2
30
Rainfall for the first 3 months of 2004 was
recorded at 2.93, 1.94, and 1.85 inches (in.).
If the normal rainfall for that period is 7.45
in., by how much was the 2004 amount
above or below normal?
7.45-2.93-1.94-1.85
= 0.73 below normal
31
Roberto has 22% of his pay withheld for
deductions. If he earns $680 per week, what
amount is withheld?
22% = 0.22
680*0.22
= $149.60
32
You buy a square lot that is 165 yd on each
side. What is its size in acres?
33
Find the area of the shaded part in the figure.
Use 3.14 for and round your answer to one
decimal place.
Area = L*W
165*165
= 27225 sq yd
Divide by 4840 sq yd per acre:
27225/4840
= 5.625 acres
= area of square – area of circle
= 15^2 – pi*(d/2)^2
= 225 - 176.625
= 48.375 sq ft
34
A basketball player scored a total of 36
points in the first three games of the season.
If he continues at the same pace, how many
points should he score in the 22-game
season?
36/3 = 12 points per game
12*22 = 264 points in the season.
35
Find the best buy on pasta sauce (1 qt is 32
oz).
A) 1 qt for $1.29
B) 45 oz for $1.59
C) 48 oz for $1.79
D) 1 qt 16 oz for $1.99
1.29/32 = about 0.0403
1.59/45 = about 0.0353
1.79/48 = about 0.03729
1.99/48 = about 0.041458
Sheila practiced 1
B is the best deal
5
36
Kim was charged $150.00 interest for 1
month on a $10,000 credit card balance.
What was the monthly interest rate?
150/10000
= 0.015
= 1.5%
37
A saleswoman is working on a 4%
commission basis. If she wants to make
$3,200 in one month, how much must she
sell?
4% = 0.04
3200/0.04
= $80,000
An office bought 24 handheld calculators for
$592. What was the cost per calculator to the
nearest cent?
592/24
= 24.66666
= $24.67
39
The pie chart shows the distribution of a
person's total yearly income of $36,000. Find
the amount budgeted for utilities.
Utilities = 8% = 0.08
0.08*36000
= $2880
40
The following scores were recorded on a
100-point examination:
91, 85, 76, 86, 96, 51, 68, 92, 85, 72, 66, 88,
93, 82, 84
Mean = add them and divide by 15:
(a) Find the mean final examination score.
(b) Find the median final examination score.
(c) Is the mean or median a more useful
representative of the final examination
scores?
= 81
38
(91+ 85+ 76+ 86+ 96+ 51+ 68+ 92+ 85+
72+ 66+ 88+ 93+ 82+ 84)/15
Median: sort them:
51, 66, 68, 72, 76, 82, 84, 85, 85, 86, 88,
91, 92, 93, 96
Middle number = 85
The median seems like a better
representation, since the very low outliers
do not impact it.
41
Let's reflect on our resources for this course:
1. Do you feel that the text has good
6
examples?
2. Did you find the extra materials on
our topics in Course Materials
helpful?
3. If so, how were they helpful?
4. If not, what suggestions can you
make so that this material might be
more helpful?
5. What other resources (MathZone,
other websites) would you suggest to
benefit someone taking this course?
42
Now, let's reflect on the entire course:
1. Two things I liked about this class
are:
2. Two things I would change in this
class are:
3. I felt frustrated in this class when:
4. I felt good in this class when:
5. If I were Teacher for a Week, I
would _________________.
(please complete this thought)
7