Deck 1: Review of Arithmetic for Dosage Calculations

Question 1

The healthcare provider prescribes 25 mg of a medication every 8 hours for the client.The next day the dose of medication is changed to 15 mg twice a day.How much has this medication been decreased?
0)0125
0)024
0)0355
0)0473

Answer 1

2
Explanation:Because the frequency of the medication has changed begin by determining the total daily dosage of the medication.When the client was receiving 75 mg of the medication every 8 hours the client received 25 x 3 or 75 mg of the medication.When the order changed,the client is receiving 15 mg x 2 or 30 mg of the medication.Now using the equation Fraction of Change = Change/Original,the equation will be Fraction of Change = 30/75 or 6/15.Convert this fraction into a decimal number by dividing 6 by 15 or 0.4 which is 40%.The medication dosage was decreased by 40%.

Question 2

Calculate the decimal number and smallest reduced fraction for 65%.
1)0.35;7/20
2)0.45;9/20
3)0.55;11/20
4)0.65;13/20

Answer 2

4
Explanation:To convert percentages to a fraction place the value of the percent in the numerator and the 100 as the denominator.For 65% this would be 65/100.Reduce this number further by dividing by 5 to determine the smallest fraction as being 13/20.To determine the decimal number begin again by placing 65 as the numerator and 100 as the denominator or 65/100.Since the denominator is 100,the number has 2 decimal points or 0.65.

Question 3

Calculate 0.35 x 1.45
Standard Text: Record the answer rounding to the nearest hundredth decimal place.

Answer 3

0.51
Explanation:When multiplying 0.35 by 1.45 begin by first calculating 35 x 145 = 5,075.Then count the total number of decimal places which is 4.From the number 5,count back four spaces or 0.5075.Next,look at the number and determine the hundreth decimal place.This is the number 7.The next number to 0 is 7 which is greater than 5.This means that the number can be rounded up to 1.The correct answer is 0.51.

Question 4

Reduce the fraction 125/8 into a mixed number and simplify to the lowest terms.
1)15 5/8
2)15 3/16
3)16 4/17
4)18 6/23

Question 5

Calculate 0.25 x 1.47 and round to the nearest tenth decimal place.
1)0.4
2)0.37
3)0.365
4)0.375

Question 6

A client is prescribed 400 mg of vancomycin every eight hours.The healthcare provider increased the dosage to 600 mg every six hours.What percentage of change was made in the dosage?
Standard Text: Record the answer rounding to the nearest whole number.

Question 7

A adult client is receiving 2000 mL of intravenous fluids per day.The healthcare provider writes an order to reduce the fluid to 1500 mL per day.What percent has the fluid changed?
Standard Text: Record the answer rounding to the nearest whole number.

Question 8

A client was receiving intravenous fluids of 100 ounces per day.The healthcare provider writes an order to reduce the fluid to 85 ounces per day.What percent has the fluid changed?
0)0165
0)0285
0)039
0)0495

Question 9

A client is prescribed 125 mg of a medication every 4 hours.The dosage is decreased to 75 mg every 4 hours.What percent was the medication decreased?
0)0115
0)022
0)036
0)0475

Question 10

Complete the following equation: 0.35 ÷ 0.20.
1)0.75
2)1.25
3)1.50
4)1.75

Question 11

Divide 4 3/5 ÷ 2 5/8 and simplify to the lowest terms.
1)1 ¾
2)1 5/8
3)2 2/3
4)3 3/7

Question 12

The dietician suggests that a client weighing 220 lbs.should lose 15% of the current body to meet the first weight loss goal.How many pounds does this client have to lose to meet the first weight loss goal?
Standard Text: Record the answer rounding to the nearest whole number.

Question 13

A client is prescribed 10 mg of a medication,3 times a day.The dosage is changed to 15 mg 3 times a day.What percentage has this medication been increased?
0)0116
0)0266
0)0375
0)049

Question 14

Calculate the decimal number and smallest reduced fraction for 85%.
Standard Text: Record the decimal number rounding to the nearest hundredth.
Correct

Question 15

Simplify the complex equation 13/15 x 200 / 11/17 and reduce it to the lowest terms.
1)267 22/25
2)276 25/27
3)302 23/27
4)347 19/24

Question 16

A client is prescribed digoxin (Lanoxin).The healthcare provider increased the client's dose from 0.25 mg to 0.375 mg.What percentage was the dosage increased?
0)015
0)025
0)0315
0)043

Question 17

A client ingested ½ of 4 ounces of juice;¾ of 6 ounces of coffee;½ of 8 ounces of broth;and ¾ of 12 ounces of water.Which fluid did the patient consume the most?
1)Juice
2)Coffee
3)Broth
4)Water

Question 18

The healthcare provider suggests that a client weighing 250 lbs.needs to lose 20% of the current body weight.How many pounds is this client expected to lose?
1)15
2)25
3)5
4)65

Question 19

Convert 0.85 to a fraction and reduce it to the smallest terms.
1)1/4
2)11/19
3)17/20
4)45/50

Question 20

Type: MCMA The medication nurse wants to verify calculations prior to administering medications through the use of a calculator.Which functions should the calculator have in order to be useful to the nurse?
Standard Text: Select all that apply.
1)Addition
2)Subtraction
3)Multiplication
4)Division
5)Percentage