Deck 8: Principles of Math in Medicine

Question 1

The Roman numeral system consists of letters that represent number values-most commonly of numbers between:

A) 0 and 50
B) 1 and 10
C) 1 and 100
D) 100 and 500

Answer 1

1 and 100

Question 2

The fraction bar, which separates the numerator and denominator in a fraction, also means:

A) multiplied by
B) added to
C) divided by
D) subtracted from

Answer 2

divided by

Question 3

To multiply fractions, you must:

A) first add the numerators and then multiply the denominators
B) first subtract the numerators and then multiply the denominators
C) first multiply the numerators and then multiply the denominators
D) invert the second fraction and then multiply

Answer 3

first multiply the numerators and then multiply the denominators

Question 4

To divide by a decimal fraction, first move the decimal point in the divisor enough places:

A) right to make it a whole number
B) left to make it a whole number
C) right one place only
D) left two places

Question 5

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?

A) 1
B) 2
C) 3
D) 4

Question 6

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?

A) I, X, L
B) I, V, X
C) I, V, C
D) V, X, M

Question 7

In prescriptions, Roman numerals are commonly used to express units of the:

A) Avoirdupois system
B) English system
C) metric system
D) apothecary system

Question 8

A common fraction represents:

A) a number that is greater than 1
B) equal parts of a whole
C) a percentage
D) a Roman numeral

Question 9

When subtracting, if fractions do NOT have the same denominator, change the fractions so they have the:

A) greatest common denominator
B) smallest common denominator
C) equivalent of 1
D) number 100 as the denominator

Question 10

Which of the following is the smallest (or "lowest") common denominator of 2, 5, and 7?

A) 10
B) 35
C) 56
D) 70

Question 11

In Roman numerals, if a lower valued letter is placed before a higher valued letter:

A) the equivalent is less than zero
B) the higher-valued letter is added to the lower-valued letter
C) the lower-valued letter is subtracted from the higher-valued letter
D) the lower-valued letter is divided by the higher-valued letter

Question 12

Fractions are used in apothecary and household measures for:

A) numbers that are less than zero
B) dosage calculations
C) numbers greater than 1 unit
D) ratios only

Question 13

The numerator of an improper fraction is:

A) always greater than its denominator
B) smaller than its denominator
C) greater than or equal to its denominator
D) either a whole number or another fraction

Question 14

The value of a mixed fraction is always:

A) less than 1
B) greater than 1
C) less than 0
D) between 0 and 1

Question 15

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?

A) You are finished; the answer is 8/10.
B) You must convert 8/10 into 80%.
C) You must divide 10 into 8.
D) You must reduce 8/10 to lowest terms (4/5).

Question 16

10/12 minus 12/36 equals which of the following choices? Make sure your answer is in lowest terms.

A) 1/2
B) 15/18
C) 1/3
D) 2/9

Question 17

10/12 plus 12/36 equals which of the following choices? Make sure your answer is in lowest terms.

A) 42/36
B) 1 and 6/36
C) 1 and 1/6
D) 11/18

Question 18

Multiply 2/7 by 7/10 and then reduce to lowest terms.

A) 14/70
B) 20/49
C) 7/35
D) 1/5

Question 19

Divide 8/12 by 3/12. Remember to invert the divisor and then to reduce to lowest terms.

A) 96/36
B) 2 and 16/48
C) 2 and 2/3
D) 24/9

Question 20

Decimal fractions, or decimals, are used within which of the following systems?

A) Avoirdupois
B) Household
C) Metric
D) Apothecary

Question 21

In writing a decimal fraction, always place a:

A) one to the left of the decimal point
B) zero to the left of the decimal point
C) zero to the right of the decimal point
D) multiple of 10 as the numerator

Question 22

The decimal fraction 0.763 is equivalent to:

A) 76 and 3/10
B) 763/1,000
C) 1/763
D) 7.63/1,000

Question 23

Add the following decimals: 1.763 + 0.29 + 12.4321.

A) 12.6113
B) 14.2241
C) 14.4851
D) 12.6374

Question 24

Subtract the following decimals: 10.975 - 3.15 - 2.7.

A) 10.633
B) 5.125
C) 5.85
D) 7.125

Question 25

The two quantities in a ratio are separated by a colon, which means:

A) percentage
B) multiplication
C) equivalent
D) division

Question 26

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?

A) 1 and 12 are the extremes and 4 and 3 are the means
B) 1 and 12 are the means and 4 and 3 are the extremes
C) 1 and 3 are the means and 4 and 12 are the extremes
D) 1 and 4 are the means and 3 and 12 are the extremes

Question 27

The term percent (%) means:

A) tenths
B) hundredths
C) thousandths
D) hundreds

Question 28

To change a percent to a decimal, move the decimal point:

A) one place to the right
B) two places to the right
C) two places to the left
D) three places to the left

Question 29

To change a fraction to a percent, divide the numerator by the denominator and then multiply the result by:

A) 0.01
B) 0.1
C) 10
D) 100