PTCB - Sample Math Test 1 2022 SOLVED

PTCB - Sample Math Test 1 How do you verify the DEA Number? Ex: BS Ans: Add the first, third, and fifth 4+2+8 = 14 Add the second, fourth, and sixth. Then multiply sum by two. 5+5+9 = 19 ---- 19 x 2 = 38 Add sums together: 38+14= 52 52: The second digit of your calculation should be 2. Therefore the last digit of the DEA # is also 2. What does ss, I, V, X, L, C mean in Roman numerals? Ans: ss = 1/2 I = 1 V = 5 X = 10 L = 50 C = 100 When would a pharmacy technician use a reducing or enlarging formula? Ans: The pharmacist may be called upon to make either a smaller or greater quantity and thus must reduce or enlarge the formula while maintaining the correct proportion of each ingredient. These are usually based on forming a 1000 ml or 1000 g of product. What is the reducing an enlarging formula? Ans: Total amount (in formula) = Quantity of each ingredient ( i.f.) total amount of desired X x = Quantity of each ingredient in amount desired 1000 mm equals ___ cm Ans: 100 cm 100 cm equals ___ m Ans: 1 m 1000 mcg equals ____ mg Ans: 1 mg 1000 mg equals ___ g Ans: 1 g 1000 g equals ____ kg Ans: 1 kg How do you calculate dose? Ans: Desired dose/ the drug in stock x quantity in stock = the amount of med. to give to pt. How do you convert a % to a decimal? Ans: Remove % sign and divide by 100. How do you convert a fraction to a percent? Ans: Divide the numerator by the denominator and multiply by 100. How to covert a percent to a fraction? Ans: Drop the % sign. Write the value of the number at numerator place over a denominator of 100. Reduce to lowest terms (what is it divisible by). How to convert a ratio to a percent? Ans: Divide first number by second number and multiply by 100. ex. 1:10 --- 1/10 =0.1 --- 0.1 x 100 = 10% The equation for calculating % (in ratio form) is: Ans: Parts of the whole = % whole 100% Concentration/ Dilution formula is: Ans: M1 x V1 = M2 x V2 (mass will be indicated in strength) How to calculate powder volume? Ans: powder volume = final volume - diluent volume How would you perform an alligation? Ans: Tic-tac-toe box. Highest [ ] upper left, lowest [ ] lower left put desired [ ] in middle. Subtract the desired [ ] from the highest [ ] place this in lower left (express in parts). Subtract the lowest [ ] from the desired place this in the upper right (expressed in parts). Add parts together. Set up ration proportion: parts x desired total parts This gives % needed. How to determine specific gravity? Ans: weight of substance / weight of an equal vol of water = s.g. ( usually 1) What is a an alligation? Ans: These are used in pharmacy when compounding either a solution or a solid. The strength being prepared is different then what they have on there shelf. In this situation they have ONE that is greater than desired [ ] and ONE that is less than the desired [ ]. These two [ ] are used together to create the correct [ ] What does a flow rate pertain to? Ans: calculations of intravenous infusions What is the calculation for time of infusion? Ans: volume of fluid (or amount of drug) / rate of infusion What is rate of infusion? Ans: Volume of fluid ( or amount of drug) /time of infusion What is infusion rate? Ans: drops/min = (number of ml/hr) x (number of drops/ml) / (60min/hour) What are two methods for calculating dosage for children? Ans: Young's rule: age of child x adult dose age of child + 12 Clark's rule: weight of child x adult dose 150