(4) Divide:
(a) 1/8 1/8 = 1/8 x 8/1 = 8/8 = 1
(b) 50
(c) 1 1/2
(d) 1,200
(e) 1/30
(f) 1/250
(g) 1/2
(reference para 1-11)
1-12. DECIMALS
Pharmacy uses primarily the metric system of measure, which is a decimal
system. Thus, the majority of the calculations will deal with decimals. At times, it is
necessary to change a fraction to a decimal to simplify a procedure.
1-13. CONVERTING A FRACTION TO A DECIMAL
a. To convert a FRACTION to a DECIMAL, divide the denominator into the
numerator.
For example:
___
(1)
1/2 = 2/1.0
=
0.5
___
(2)
1/5 = 5/1.0
=
0.2
___
(3)
1/3 = 3/1.0
=
0.333
b.
Change the following fractions to decimals:
___
(1)
1/8 =
/
=
___
(2)
3/4
=
/
=
___
*
(3)
25/100 =
/
=
___
(4)
1/5000 =
/
=
MD0802
1-16