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# Pharm 2

### Week 2 Study Guide

The basic formula method is N/A x V = DOSE
The two outer numbers in a proportion are called the EXTREMES
The numbers directly to the left and right of the equal sign in a proportion are called MEANS
1:2 = 6:12
A ___________ expresses a relationship between two components RATIO
The ratio and proportion formula is Dosage on hand: Amount on hand = Dosage desired: x (Amount desired)
When adding or subtracting fractions, you must first Change any mixed fractions into improper fractions
When dividing fractions, you reverse the numerator and denominator of the second fraction and then Multiply the numerators and denominators straight across
24 pounds is equal to divide 24 pounds by 2.2 (10.8862kg round up to 10.90)
The prefix ____________ indicates 1000 units KILO
12.30 + 12.50 = 24.80
5:15 = X:450 What does X =? 3
If the provider prescribes 1500 mg of Benadryl elixir and the supply available is 500 mg per 25 mL, how much elixir should you give the patient? 75mL
The prefix _____________ indicates 1/1,000,000 of a unit. MICRO
A(n) _______ fraction includes both a whole number and a fraction. MIXED