PERCENTAGES
Percentages are given amounts of what?
Hundreds (100's)
8oz is equivalent to _______mLs?
240mLs
When converting with the arrowhead you would _____________?
Multiply
When calculating a Ratio and Proportion with ‘Unlike Units’ you must do what first?
Convert to 'Like' units
How many gms of Salicylic Acid will be used to make this compound?
S.A. 3% in Triamcinolone 0.1% Ointment Disp. 2oz
2oz x 30 = 60gm
60gm x 3% = 1.8gm
Without using a calculator how would you change a percent into a decimal?
Change the percent sign (%) to a decimal and move two places to the left
How many tablespoons is 45mLs?
3 tablespoons
(45mL divided by 15mL = 3)
How many micrograms are in 0.3mg?
0.3mg x 1000 = 300mcg
Thyroid 60mg tablets
Take ¼ grain daily. How many milligrams will the patient be using?
¼ = 0.25mg
0.25mg x 60 = 15 milligrams
LCD (coal tar solution)
6gm is equivalent to how many milliliters?
6gm/0.8 (specific gravity) = 7.5 milliliters
What is 30% of 100?
100x30 (%) key = 30
2.5 teaspoons is equivalent to ______mLs?
12.5mL
(2.5 x 5mL= 12.5mL)
How many grains are in 300mg?
300mg/60 =5gr
Amoxicillin Oral Susp. 125mg/5mL #150mL
Give 200mg q6h until gone
Each dose is ________mLs?
200mg x 5mL=1000mg
1000mg/125mg = 8mLs
How many Acetazolamide 250mg tabs are needed to make this compound?
Acetazolamide 25mg/mL susp.
Disp 480mLs
25mg x 480mL = 12,000mg/ 250mg = 48 tablets
60% of 180 =
108
How many ounces is 1 pint?
1 pint = 16oz
How many 250mg capsules is 1gm?
1gm = 1000
1000/250mg = 4 capsules
What is the day supply?
Levothyroxine 0.05mg tablets
Take 25mcg po daily
Dispense: 50
25mcg/1000 = 0.025mg
0.025mg/0.05mg = 0.5 tab
50 tab/0.5 = 100 day supply
How much of each ingredient is needed to make this compound?
Mylanta, Donnatal and Lidocaine 3:1:1
Disp. 480mL
3:1:1 totals 5 portions
480/5 = 96 a portion
96x3 = 288mL Mylanta
96x1 = 96mL Donnatal
8% of 250 =
20
How many pints is 1 quart?
2 Pints
Atarax 25mg #50
Take 0.05gm q8h prn itching
How many tablets is one dose?
0.05 gm x 1000 = 50mg/25mg = 2 tablets
Total quantity to dispense?
Digoxin 250 mcg tablets
Take 0.125mg daily for 30 days
0.125mg x 1000 = 125mcg
125mcg/250mcg = 0.5 tablets
0.5tab x 30 days =
15 tablets to dispense
How much of each ingredient is needed to make this compound?
LCD 5%, Salicylic Acid 6% in Triamcinolone 0.1% Ointment
Disp 60gm
60gm x 5% = 3gm
60gm x 6% = 3.6gm
60mg-3gm-3.6gm = 53.4gms of Triamcinolone ointment QSAD 60 grams
LCD 3gm / 0.8 = 3.75mL