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Pharmacology

Chapter 5

QuestionAnswer
The Roman numeral system consists of letters that represent number values-most commonly of numbers between 1 and 100
The fraction bar, which separates the numerator and denominator in a fraction, also means divided by
To multiply fractions, you must first multiply the numerators, then multiply the denominators
To divide by a decimal fraction, first move the decimal point in the divisor enough places right to make it a whole number
If you are required to cross-multiply the fractions 3/4 and 1/2, by which number would you multiply the 4 in the first fraction? 1
When working with numbers that range from 1 to 30, only three Roman numerals are required, used in various combinations. Which of the following choices of Roman numerals is correct? I, V, X
In prescriptions, Roman numerals are commonly used to express units of the apothecary system
A common fraction represents equal parts of a whole
When subtracting, if fractions do not have the same denominator, change the fractions so they have the smallest common denominator
Which of the following is the smallest (or lowest) common denominator of 2, 5, and 7? 70
In Roman numerals, if a lower valued letter is placed before a higher valued letter THE LOWER VALUED LETTER IS SUBTRACED FROM THE HIGHER VALUED LETTER
Fractions are used in apothecary and household measures for dosage calculations
The numerator of an improper fraction is always greater than its denominator
The value of a mixed fraction is always greater than 1
You have added the fractions 2/5 and 4/10 by converting 2/5 into 4/10 so the denominators are the same. Your addition has given you the total of 8/10. Now what must you do? You must reduce 8/10 to lowest terms (4/5)
10/12 plus 12/36 equals which of the following choices? Make sure your answer is in lowest terms. 42/36
10/12 plus 12/36 equals which of the following choices? Make sure your answer is in lowest terms. 1 and 1/16
Multiply 2/7 by 7/10 and then reduce to lowest terms. 1/5
Divide 8/12 by 3/12. Remember to invert the divisor and then to reduce to lowest terms. 2 and 2/3
Decimal fractions, or decimals, are used within which of the following systems? Metric
In writing a decimal fraction, always place a zero to the left of the decimal point
The decimal fraction 0.763 is equivalent to 763/1,000
Add the following decimals: 1.763, 0.29, 12.4321 14.4851
Subtract the following decimals: 10.975, 3.15, 2.7. 5.125
If the multiplicand has three decimal places and the multiplier has two decimal places, how many decimal places will the product have? Five
The two quantities in a ratio are separated by a colon, which means: Division
Proportions express the relationship of equality between two ratios. In the proportion 1:4 :: 3:12, which terms are called the extremes and which are called the means? 1 and 12 are the extremes and 4 and 3 are the means.
The term percent means hundredths
To change a percent to a decimal, move the decimal point two places to the left
To change a fraction to a percent, divide the numerator by the denominator and then multiply the result by 100
Created by: tmsims74
 

 



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