00 000 00 0 000 000 0
Why is math important in 00 000 00 0 000 000 0 healthcare? Health care workers are required to perform simple math calculations when doing various tasks. Mathematical errors may result in injury or a life or death situation.
Confidence with Numbers! Whole numbers: 00 000 00 0 000 000 0 Non-whole numbers Mixed numbers Percentages:
00 000 00 0 000 000 0 Basic Math
Averages 00 000 00 0 000 000 0 Practice! Here s the sample 9, 20, 2, 23, 8, 25, and 26
Health Care uses the Metric System Why? 00 000 00 0 000 000 0 To align with the rest of the world To assure accurate and consistent communication in a healthcare setting Because it is based on 0s, you can do some calculations in your head! Image from www.pocketnurse.com
00 000 00 0 000 000 0 Basic rules to the Metric System. Use decimals, not fractions Ex: /0 = 0. 2. Write a 0 before a decimal. Ex:. is 0. 3. Abbreviations for metric terms are never plural. Ex: grams is g, not gs
Prefixes make it simple! 00 000 00 0 000 000 0 What s the pattern? kilometer =,000 meters hectometer = 00 meters dekameter = 0 meters meter decimeter = 0. meter centimeter = 0.0 meter millimeter = 0.00 meter
00 000 00 0 000 000 0 Start with Length Write and memorize! kilometer =,000 meters meter centimeter = 0.0 meter millimeter = 0.00 meter
Make a Mental Picture 00 000 00 0 000 000 0 Kilometer Track around football field = 400 meters How far for a kilometer? 2.5 times Meter Centimeter Millimeter Meter: about floor to waist Centimeter: width of index finger Millimeter: thickness of fingernail
00 000 00 0 000 000 0 Length Practice! 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)?
00 000 00 0 000 000 0 kilogram = What about weight?,000 grams gram milligram = 0.00 gram Also referred to as mass.
Make a Mental Picture 00 000 00 0 000 000 0 Kilogram About the weight of a half-full 2-liter bottle. Gram The plastic top weighs 2 grams A can of soup contains 300 grams Milligram Approximately 3 grains of salt.
00 000 00 0 000 000 0 Weight practice! How many milligrams in a gram? kilogram? How many grams in a How much did you weigh at birth in kilograms? Example: 7.5 lbs = 3.4 kg Formula: lbs / 2.2 = kilograms kg x 2.2 = pounds
00 000 00 0 000 000 0 What about volume? liter milliliter = 0.00 liter cubic centimeter (cc) = milliliter (ml)
Make a Mental Picture 00 000 00 0 000 000 0 Liter You already know the volume of a 2-Liter bottle Milliliter A can of soda is 240 ml One teaspoon is 5 ml
00 000 00 0 000 000 0 Volume practice! How many milliliters in a liter? How many milliliters in a coffee mug?
Now it s time to get serious 00 000 00 0 000 000 0
00 000 00 0 000 000 0 Converting Grams Grams to milligrams multiply by 000 or move decimal three places to the right 0.5 g = mg 0.50 g = 50 mg 0.5 g = 50 mg Milligrams to grams divide by 000 or move decimal three places to the left 500 mg = g
Practice converting grams and kg 00 000 00 0 000 000 0 What would you do to convert grams to kilograms? 600 g = kg What would you do to convert kilograms to grams? 4.5 kg = g
00 000 00 0 000 000 0 Converting Meters Meters to millimeters multiply by 000 or move decimal three places to the right 2.54 m = mm 2.540 m = 2540 mm Milliliters to liters divide by 000 or move decimal three places to the left 650 mm = m
Metric Quiz. 0.25 g = mg 00 000 00 0 000 000 0 2..5 m = mm 3. 3 mm = m 4. 0 cc = ml 5. 2 mg = g 6. 200 ml = L 7. 88 g = kg 8. 7.5 cm = m 9. 300 m = km 0. 0 kg = g. 40 mg = kg 2. 6 L = ml
Common Conversions - Weight 00 000 00 0 000 000 0 kg = 2.2 lbs To convert lbs to kg, divide the number of pounds by 2.2 45 lbs 2.2 = 65.9 kg
Now You Try It - Weight. 6 oz = kg 00 000 00 0 000 000 0 2. 220 lbs = kg 3. 362 g = lbs 4. 4 kg = lbs 5. 6 oz = g 6. 280 g = oz 7. 0.336 kg = oz
Common Conversions - Length 00 000 00 0 000 000 0 inch (in) = 0.025 meter (m) To convert inches to meters, multiply the number of inches by 0.025 60 in x 0.025 =.5 m
Now You Try It - Length. 6 in = m 00 000 00 0 000 000 0 2. 27.94 cm = in 3. 25 m = in 4. 400 ft = m 5. 5.24 cm = ft 6. 6 ft 2 in = cm 7. 50 m = yards
Common Conversions - Volume 00 000 00 0 000 000 0 oz. = 30 ml To convert oz. to ml, multiply the number of ounces by 30 20 oz. x 30 = 600 ml
Now You Try It - Volume. 4 ml = cc 00 000 00 0 000 000 0 2. 20 tsp = ml 3. 20 ml = tsp 4. 4 oz = ml 5. 750 ml = cups 6. 64 oz = pts 7. 9 qts = L
Congratulations! Time to Convert Temperature 00 000 00 0 000 000 0 Fahrenheit (F) to Celsius (C) = 0 F- 32 x (5/9) Celsius (C) to Fahrenheit (F) = 0 C x (9/5) + 32 If you memorize those two formulas, temperature conversion is fairly easy. Get out your calculators!
Now You Try It - Temperature. 260 0 F = 0 C 00 000 00 0 000 000 0 2. 32 0 F = 0 C 3. 02.6 0 F = 0 C 4. 8 0 C = 0 F Round to the nearest tenth 5. 32 0 C = 0 F 6. 0 0 C = 0 F
00 000 00 0 000 000 0 24 hour clock Military or international time Conversion: Write 00 as the first two digits to represent the first hour after midnight. Write 0, 02, 03... as the first two digits to represent the hours :00 a.m. through :00 a.m. Add 2 to the first two digits to represent the hours :00 p.m. through :00 p.m., so that 3, 4,... 23 represent these hours. Write noon as 200, and write midnight as 0000 for international time.
00 000 00 0 000 000 0 24 hour clock
00 000 00 0 000 000 0 Percents A percent indicates a value equal to the number of hundredths. Changing a Percent to a fraction: Drop the percent sign (%) Write the number as the numerator Write 00 as the denominator Reduce to lowest terms
00 000 00 0 000 000 0 Percents (cont.) Changing a Percent to a decimal: Drop the percent sign (%) Divide by 00 (by moving the decimal point Divide by 00 (by moving the decimal point two places to the left) Express the quotient as a decimal.
00 000 00 0 000 000 0 Percents (cont.) Finding Percentages of Numbers: Write the number after the word of as the denominator. Write the other number as the numerator. Divide the numerator by the Multiply by 00 denominator. Add the percent sign (%) Example: What is 35 of 90? Write as a fraction: 35/90 Divide numerator by denominator: 35 90 =.39 Multiply by 00, add percent sign:.39 x 00 = 39%
Now You Try It - Percents Change a percent to a fraction:. 25% = /4 2. 75% = 3/4 00 000 00 0 000 000 0 3. 90% = 9/0 Change a percent to a decimal:. 66% =.66 2. 04% =.04 Find percent of a number:. 55 of 60 = 92% 2. 75 of 85 = 88% 3. 6 of 20 = 5%