Basic Mathematics for College Students

Step 2Add the sum of the remaining scores and

multiply by the degree of difficulty.

112. SUM-PRODUCT NUMBERS

a. Evaluate the expression below, which is the sum

of the digits of 135 times the product of the digits

of 135.

b. Write an expression representing the sum of the

digits of 144 times the product of the digits of

144. Then evaluate the expression.


145. CLIMATE One December week, the high
     temperatures in Honolulu, Hawaii, were
     and Find the week’s
     mean (average) high temperature.


146. GRADES In a science class, a student had test
     scores of and 89. He also overslept,
     missed the final exam, and received a 0 on it. What
     was his test average (mean) in the class?


147. ENERGY USAGE See the graph below. Find the
     mean (average) number of therms of natural gas
     used per month for the year 2009.

94, 85, 81, 77,

75°, 80°, 83°, 80°, 77°, 72°, 86°.

(1 3 5)(1 3 5)

1.9 Order of Operations 111

Judge

Score

Degree of difficulty: 3

1234567

9878687

9 in.

16 in.

4 in.

TRIPLELETTER

SCORE

DOUBLELETTER

SCORE

DOUBLELETTER

SCORE

TRIPLEWORD

SCORE

DOUBLELETTER

SCORE

LETTERTRIPLE

SCORE

TRIPLELETTER

SCORE

DOUBLELETTER

SCORE

DOUBLELETTER

SCORE

TRIPLEWORD

SCORE

DOUBLELETTER

SCORE

LETTERTRIPLE

SCORE

B 3

R 1

A 1 P 3 H 4 I 1 D 2

C 3

K 5

Before After

108. WRAPPING GIFTS How much ribbon is needed
     to wrap the package shown if 15 inches of ribbon are
     needed to make the bow?


109. SCRABBLE Illustration (a) shows part of the game
     board before and illustration (b) shows it after the
     words brickand aphidwere played. Determine the
     scoring for each word. (Hint:The number on each
     tile gives the point value of the letter.)

(a) (b)

110. THE GETTYSBURG ADDRESS Here is an
     excerpt from Abraham Lincoln’s Gettysburg
     Address:
     Fourscore and seven years ago, our fathers
     brought forth on this continent a new nation,
     conceived in liberty, and dedicated to the
     proposition that all men are created equal.
     Lincoln’s comments refer to the year 1776, when the
     United States declared its independence. If a score is
     20 years, in what year did Lincoln deliver the
     Gettysburg Address?


111. PRIME NUMBERS Show that 87 is the sum of the
     squares of the first four prime numbers.

Acct 45-009

Janice C. Milton

2009 Energy Audit

23 N. State St. Apt. B

Tri-City Gas Co.

Salem, OR

J FMAMJ JA SOND

Therms used

50

40

30

20

10

(^394037)
31
22 23
14 16
33
41
34
42

116. COUNTING NUMBERS What is the average
     (mean) of the first nine counting numbers:
     and 9?


117. FAST FOODS The table shows the sandwiches
     Subway advertises on its 6 grams of fat or less menu.
     What is the mean (average) number of calories for
     the group of sandwiches?

1, 2, 3, 4, 5, 6, 7, 8,

6-inch subs Calories

Veggie Delite 230

Turkey Breast 280

Turkey Breast & Ham 295

Ham 290

Roast Beef 290

Subway Club 330

Roasted Chicken Breast 310

Chicken Teriyaki 375

(Source: Subway.com/NutritionInfo)