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WGUD441 Medical Dosage Calculations and Pharmacology
General Exam Study Guide
SECTION#:1 Course Assessments
You will have the following assessments in this course to demonstrate competency:
Shadow Health Performance Assessment.
HESI Dosage Calculations Objective Assessment.
HESI Pharmacology Objective Assessment.
Chapter 1
What are fractions and their different types?
Fraction indicates the number of equal parts of a whole. For example, 3/4 means three of four
equal parts.
The different components of a fraction are:
• Denominator (divisor):
o The number below the fraction line
o The number of parts into which a whole is divided
• Numerator (dividend):
o The number above the fraction line
o The number of parts of a divided whole
• The line:
o Indicates division to be performed
o Is read as “divided by”
▪ 3/4, or three fourths, is read as “three divided by four,” that is, the
numerator is “divided by” the denominator
When numbers are multiplied, the answer is the product. When numbers are divided, the answer
is the quotient.
Proper Fraction
• The numerator is smaller than denominator
• Also called common or simple
fraction Improper Fraction
, 2
The numerator is larger than or equal to the denominator
Complex Fraction
Contains a fraction in its numerator, its denominator, or both
Mixed Number
Combination of a fraction and a whole number How is
a fraction reduced to its lowest terms?
A fraction can be expressed in smaller numbers without change in its real value. This is called
“reduce to lowest terms.” The reduction is accomplished by dividing the numerator and the
denominator by the same number.
How is an improper fraction changed to a mixed number? To
change an improper fraction to a mixed number:
1. Divide the numerator by the denominator.
2. Place remainder over denominator and write this proper fraction beside the whole
number found in step 1.
When an improper fraction is reduced, it gives a mixed or a whole number.
How is a mixed number changed to an improper fraction? To
change a mixed number to an improper fraction:
1. Multiply the denominator by the whole number.
2. Add the product to the numerator.
3. Place the sum over the denominator.
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How is the lowest common denominator determined?
The lowest common denominator is the smallest whole number that can be divided evenly by all
denominators in the problem. It facilitates computations.
To determine the lowest common denominator:
• Identify if one of the denominators is evenly divisible by each of the others.
• If yes, it is the lowest common denominator.
How is a fraction changed to an equivalent fraction with the lowest common denominator?
To change a fraction to an equivalent fraction with the lowest common denominator, follow these
steps.
How is a mixed number changed to an equivalent fraction with lowest common denominator?
, 4
Review the steps for changing a mixed number to an equivalent fraction with the lowest common
denominator.
WGUD441 Medical Dosage Calculations and Pharmacology
General Exam Study Guide
SECTION#:1 Course Assessments
You will have the following assessments in this course to demonstrate competency:
Shadow Health Performance Assessment.
HESI Dosage Calculations Objective Assessment.
HESI Pharmacology Objective Assessment.
Chapter 1
What are fractions and their different types?
Fraction indicates the number of equal parts of a whole. For example, 3/4 means three of four
equal parts.
The different components of a fraction are:
• Denominator (divisor):
o The number below the fraction line
o The number of parts into which a whole is divided
• Numerator (dividend):
o The number above the fraction line
o The number of parts of a divided whole
• The line:
o Indicates division to be performed
o Is read as “divided by”
▪ 3/4, or three fourths, is read as “three divided by four,” that is, the
numerator is “divided by” the denominator
When numbers are multiplied, the answer is the product. When numbers are divided, the answer
is the quotient.
Proper Fraction
• The numerator is smaller than denominator
• Also called common or simple
fraction Improper Fraction
, 2
The numerator is larger than or equal to the denominator
Complex Fraction
Contains a fraction in its numerator, its denominator, or both
Mixed Number
Combination of a fraction and a whole number How is
a fraction reduced to its lowest terms?
A fraction can be expressed in smaller numbers without change in its real value. This is called
“reduce to lowest terms.” The reduction is accomplished by dividing the numerator and the
denominator by the same number.
How is an improper fraction changed to a mixed number? To
change an improper fraction to a mixed number:
1. Divide the numerator by the denominator.
2. Place remainder over denominator and write this proper fraction beside the whole
number found in step 1.
When an improper fraction is reduced, it gives a mixed or a whole number.
How is a mixed number changed to an improper fraction? To
change a mixed number to an improper fraction:
1. Multiply the denominator by the whole number.
2. Add the product to the numerator.
3. Place the sum over the denominator.
, 3
How is the lowest common denominator determined?
The lowest common denominator is the smallest whole number that can be divided evenly by all
denominators in the problem. It facilitates computations.
To determine the lowest common denominator:
• Identify if one of the denominators is evenly divisible by each of the others.
• If yes, it is the lowest common denominator.
How is a fraction changed to an equivalent fraction with the lowest common denominator?
To change a fraction to an equivalent fraction with the lowest common denominator, follow these
steps.
How is a mixed number changed to an equivalent fraction with lowest common denominator?
, 4
Review the steps for changing a mixed number to an equivalent fraction with the lowest common
denominator.
