Number Systems
Two types of number systems used in pharmacy calculations
What is Arabic and Roman numerals?
Translate VII
What is 7?
5+1+1=7
The top number of a fraction
What is a numerator?
The sum of 1/2 + 3/5
What is 11/10 or 1 1/10?
Lowest number that can be divided evenly by both 2 and 5 is 10. To convert 1/1 multiply by 5/2 = 5/10. To convert 3/5, multiply 3/5 by 2/2 = 6/10. Then ADD 5/10 + 6/10
Round 3.872 to the nearest hundredth
What is 3.87?
to the right of decimal = tenths, hundredths, thousandths, ten thousandths, hundred thousandths. millionths
This number system consists of 10 digits
What is the Arabic number system?
Translate XXI
What is 21?
10+10+1 = 21
The bottom number of a fraction
What is a denominator?
The sum of 1/4 + 3/7
What is 19/28?
common denom = 28
7/28 + 12/28 = 19/28
The quotient of 12 / 6.5 rounded to the nearest thousandth
What is 1.846?
This number system contains seven main symbols
What is the Roman numeral system?
Translate XL
What is 40?
10 -50 = 40
A fraction with a value less than 1
What is a proper fraction?
(numerator less than denominator)
Reduce 3/27 to its lowest terms
What is 1/9?
9.98 rounded to nearest tenth
What is 10.0?
The ability to known what numbers and symbols mean
What is number sense?
Translate CD
What is 400?
500-100 = 400
What is an improper fraction?
(numerator greater than or equal to denominator)
The difference of 3/4-2/3
What is 1/12?
common denom = 12
3/4 = 9/12 and 2/3 = 8/12
9/12-8/12 = 1/12
The product of 3.46 x 7.1 rounded to the nearest tenth
What is 24.6?
A number that is divisible only by 1 and itself
What is a prime number?
Translate CXIII
What is 113?
100+10+1+1+1 = 113
The combination of a whole number and a fraction
What is a mixed number?
The product of 2 x 1/2 x 1/3 reduced to its lowest terms
What is 1/3?
2/1 x 1/2 x 1/3 = 2/6 reduced to 1/3
The quotient of 0.8/0.6 rounded to the nearest thousandth
What is 1.333?