Unit 1 - INTRODUCTION MEDICAL MATH Listening guide

Transcription

1 Unit 1 - INTRODUCTION MEDICAL MATH Listening guide Name Period 1. List one important reason that healthcare workers must be proficient in math. 2. Number forms: 3. Basic math: Counting numbers and zero Numbers that have decimals Whole numbers and a fraction Represents part or all of something totaling of two or more numbers taking a number away from another finding the product of two numbers process of separating into parts 4. Averages: The average of a group of numbers is computed by all numbers and by the number of observations 5. Why do we use the metric system in healthcare? 1) 2) 3) 6. Rules of the metric system: 1) Numbers indicating less than one unit are always written in a Example: 2) When writing decimals, if there is no number before the decimal, always write Example: Unit One Introduction 1 Utah State Office of Education

2 3) Abbreviations for metric terms are never ; they are always written in form. Example: 4) Leave a space between the number and the 7. Describe the following in meters: Example: 1 kilometer: 1 centimeter: 1 millimeter: 8. Can you do the math? How many millimeters in a centimeter? How many centimeters in a meter? How many millimeters in a meter? How many meters in a kilometer? How tall are you in meters?(estimate) 9. What about weight? 1 kilogram: grams 1 milligram: gram 10. Can you do the math? How many milligrams in a gram? How many grams in a kilogram? How much did you weigh at birth in kilograms? 11. Liquid measurements: (hint: formula is: pounds / 2.2 = kilograms) 1 milliliter = liters 1 cubic centimeter (cc) = (important to remember!) Unit One Introduction 2 Utah State Office of Education

3 12. Can you do the math? How many milliliters in a liter? How many milliliters in a coffee mug? 13. When converting grams to milligrams multiply by or move decimal places to the right. Example: 14. When converting milligrams to grams divide by or move decimal three places to the. Example: 15. Practice converting grams and kilograms: 600 g = kg 4.5 kg = g 16. Meters to millimeters multiply by or move decimal places to the. Example: 17. Milliliters to liters divide by or move decimal places to the. Example: Metric Quiz g = mg g = kg m = mm cm = m 3. 3 mm = m m = km cc = ml kg = g 5. 2 mg = g mg = kg ml = L L = ml Unit One Introduction 3 Utah State Office of Education

4 Household Weight Conversion Chart: 1 ounce (oz) = kg or 28 g 1 pound (lb) = kg or 454 g 1 kg = 2.2 lbs To convert lb to kg, divide the number of pounds by lb 2.2 = 65.9 kg To convert kg to lb, multiply the number of kilograms by kg x 2.2 = 55 lbs Weight: 6 oz = kg 220 lbs = kg 1362 g = lb 4 kg = lbs 16 oz = g 280 g = oz kg = oz Household Length Conversion Chart: 1 inch (in) = meter (m) or 2.54 cm 1 foot (ft) = 0.31 meter (m) or cm 1 yard (yd) = 0.93 meter (m) Length: 1. 6 in = m cm = in m = in m = in cm = ft 6. 6 ft 2 in = cm m = yards Unit One Introduction 4 Utah State Office of Education

5 Household Volume Conversion Chart: 1 milliliter (ml) = 1 cubic centimeter (cc) 1 teaspoon (tsp) = 5 milliliters (ml) 1 tablespoon (tbsp) = 15 milliliters (ml) 1 ounce (oz) = 30 milliliters (ml) 1 cup = 8 oz = 240 ml 1 pint (pt) = 16 oz = 500 ml Temperature Conversion Chart 1 quart (qt) = 32 oz = 1000 ml = 1 Liter (L) Volume: o 4 ml = cc o 20 tsp = ml o 20 ml = tsp o 4 oz = ml o 750 ml = cups o 64 oz = pts o 9 qts = L Temperature conversion chart Fahrenheit (F) to Celsius (C) = F 32 x Celsius (C) to Fahrenheit (F) = 0 C x Temperature: F = C F = C F = C 4. 8 C = F C = F 6. 0 C = F Unit One Introduction 5 Utah State Office of Education

6 18. Finding Percentages of Numbers: Write the number after the word of as the Write the other number as the. Divide the numerator by the. Multiply by Add the percent sign Change a percent to a fraction: 1. 25% = 2. 75% = 3. 90% = 4. Change a percent to a decimal: 5. 66% = % = 7. Find percent of a number: of 60 = of 85 = of 120 = 19. Reading Roman Numerals M=, D=, C=, L=, X=, V=, and I= The letters are arranged from to in descending order of valuation and are simply to each other. Rewrite the following: 1. 4 = 2. 7 = 3. 16= 4. XVIII = 5. XIX = 6. XI = 20. A ratio indicates a relationship between numbers. Changing a fraction to a ratio Reduce to terms Write the of the fraction as the first number of the ratio Place a after the first number Write the of the fraction as the second number of the ratio Unit One Introduction 6 Utah State Office of Education

7 Changing a percent to a ratio Express the percent as a reduced to lowest terms Write the of the fraction as the first number of the ratio. Place a colon after the number. Write the denominator of the as the second number of the ratio. Change the following fractions to a ratio: 1. 5/25 = 2. 8/24 = - Change the following percents to a ratio: 3. 30% = 4. 68% = 5. 15% = Unit One Introduction 7 Utah State Office of Education