300 Essential Skills for Health Careers Success
65. Round off each of the following numbers
to the nearest one-hundredth.
A. 3.456
B. 43.333
C. 57.892
66. A patient has a medical bill for $16,201.99.
What is the balance remaining after her
insurance company pays $12,961.59?
67. Convert the following fractions to deci-
mal fractions.
A. 5/16
B.
432⁄5
C.
44⁄7
Percentages
Answer the following questions without using a
calculator. When necessary, round off to the near-
est hundredth.
68. Convert 42% to a decimal fraction.
69. What is 20% of 150?
70. What is 6.5% of 645?
71. Convert 180% into a fraction.
72. Convert 0.657 into a percentage.
73. One study has found that 25% of people
who get the fl u shot will still get the fl u. If
15,230 people got the vaccine, how many
people would still get the fl u even with
the vaccination?
74. In a medical clerical class of 29 students,
12 students want to work in a hospital,
10 students want to work in a doctor’s
offi ce, 3 students want to work in a clinic
setting, and 4 are undecided. What per-
centage of students wants to work in a
hospital?
75. Convert 85% into a fraction.
76. Convert
5¾
into a percentage.
77. Convert 3.1416 into a percentage.
Ratios
Answer the following questions without using a
calculator.
78. Convert 1:5 into a fraction.
79. In a chemistry laboratory, a student is
asked to create a solution that contains
10 milliliters of a weak acid to 400 millili-
ters of distilled water. What is the ratio of
the weak acid to the distilled water?
80. A student planning to be a dietician is
surprised to learn that a gallon of ice
cream contains 15 grams of fat, 12 grams
of which are saturated fat. What is the
ratio of saturated fat to the total fat in the
gallon of ice cream?
81. Express the ratio 6:4 two different ways.
82. An instructor grades a health occupations
class fi nal. 24 students passed. 4 students
failed the class. What is the ratio between
the students who passed and those who
failed?
Algebra
Answer the following questions without using a
calculator.
83. x + 15 = 45
84. 3x – 18 = 78
85. 4x + 2 = 8
86.
¼
x + 12 = 220
87.
1⁄5x
– 10 = 365
88. Dr. Edward has x number of patients.
Dr. Ryan has twice as many patients as
Dr. Edward. Dr. Ryan has 42 patients.
How many patients does Dr. Edward
have? Show your work.
89. A doctor has ordered 70 mg of medication
to be given to a patient by mouth. The
medicine label indicates that one capsule
contains 20 mg of medicine. How many
capsules should be given to the patient to
reach the required dosage?
90. When working with a patient, a nurse is
instructed to give an injection of 75 mg of
liquid medication. The medication bottle
reads 125 mg/ml. How many ml of the
medicine should be injected to achieve the
desired dosage of 75 mg?