The speed is measured in kilometers per hour, as opposed to miles per hour. Prefix—milli—means measure in thousandths of a unit. actually used it that I had forgotten it all! Thanks! I took it home to redo and this helped me a lot! There are 17 references cited in this article, which can be found at the bottom of the page. *Seen in the expression of laboratory values (e.g., hemoglobin, creatinine levels). Click to share on Twitter (Opens in new window), Click to share on Facebook (Opens in new window), Click to share on Google+ (Opens in new window), Express metric measures correctly using rules of the metric system, State common equivalents in the metric system, Convert measures within the metric system. Milliliter—abbreviated as mL. Common prefixes in this system denote the numerical value of the unit being discussed. Prefixes used most often in medication administration. This allows easy recognition of the unit of measure. microgram = mcg wikiHow marks an article as reader-approved once it receives enough positive feedback.     Dosages are calculated by using metric measurements that relate to weight and volume. Milliliter—abbreviated as mL. When in doubt about an abbreviation being used, never assume; ask the prescriber for clarification. Kilo is 1000 times larger than the base unit, hecta is 100 times larger, and deka is 10 times larger than the base unit. The exception to this rule is liter, for which a capital letter is used. ", unlock my conversion difficulties. Functional Mathematics Entry 3 Use metric units in everyday situations. For volume, think about the size of a liter bottle of soft drink. ", "I think everyone should learn the metric system. The metric system is more precise than the apothecary and household systems; therefore it has become the system of choice for the calculation of dosages. gram = g The exception to this rule is liter, for which a capital letter is used. This was clear and concise. *deciliter = dL ", "Needed this for a test tomorrow. Certain rules specific to the metric system are important to remember (Box 6-2). Move the decimal to the left if you're converting smaller units into larger ones. The metric system has become the system of choice for medications and measurements used in the health care setting. The Metric System - Description. This took me step by step back through it, and was easier to remember this way! 1, 1,000, 0.5 Replace all your measuring cups and spoons with their metric equivalents. ", "This not only helped, it just taught me how to use the metric system without converting. After reviewing this chapter, you should be able to: 1. 0.01 Meter, which is used for linear (length) measurement, is not used in the calculation of dosages. Regardless of the size of the unit, the name of the basic unit is incorporated into the measure. Prefix For example, try "My Large Giraffe" to remember that the base units for measuring length, volume, and mass are the meter, liter, and gram. Do not confuse units of measure in the metric system for weight, volume, and length that have similar names. Therefore: 100x100. Confusion of the symbol used for microgram with the abbreviation for milligram could cause a critical error in dosage calculation. Example 3: You can start thinking metrically the same way. Milligram is a unit of weight; milliliter is a unit of volume; and millimeter is a unit of length. Thanks. When going from a unit larger than the base unit to one smaller than the base unit, simply count the number of steps between the two units. Thank you! The system is logical and exact. The system is also referred to as the International System of Units, abbreviated as SI units. If you learn a second language, you can learn by translating words and phrases from the second language into your first language, but to really understand the second language you have to learn to think in that language also. RULES OF THE METRIC SYSTEM The first letter of each word corresponds to the first letter of the prefix, with. For example, suppose you are making a list of restaurants within 1 kilometer of your house. The m is taken from the prefix milli and the g from gram, the unit of weight. You also might want to try a mnemonic device if you're having trouble remembering the base unit. Memorization of these prefixes is necessary for quick and accurate calculations. c) Meter—the basic unit for length Memorization of these prefixes is necessary for quick and accurate calculations. Let’s look at the following example to see how the prefixes may be used. Although a few medications are still prescribed in apothecary and household terms, the nurse will find that the majority of medication calculation and administration skills involve familiarity and accuracy with the metric system to administer medications safely. Deka Three basic units of measure are used: a) Gram—the basic unit for weight (solid), b) Liter—the basic unit for volume (liquid). 2. 4. You may see gram abbreviated as Gm or gm, liter as lowercase l, or milliliter as ml. The apothecary system is being phased out and gradually being replaced by the metric system. If you commute to work or school every day, find out how many kilometers that location is from your house. wikiHow's Content Management Team carefully monitors the work from our editorial staff to ensure that each article is backed by trusted research and meets our high quality standards. 2. The other common prefixes used in medication administration are smaller units: centi, milli, and micro. Anyway, back to the exciting topic of the metric system. 3. Meaning However many, retailers continue to display imperial equivalents alongside. Do not confuse units of measure in the metric system for weight, volume, and length that have similar names. To understand the metric system, you must memorize the base units for each type of measurement. ", "I failed my metric quiz. 100 centimeter = 1 meter Express parts of a unit or fractions of a unit as decimals. Common prefixes in this system denote the numerical value of the unit being discussed. A megabyte is one million bytes, just as a mega-liter is one million liters. Metric System 1,000 ", http://www.visionlearning.com/en/library/General-Science/3/The-Metric-System/47, https://www.cgc.maricopa.edu/Academics/LearningCenter/Science/Documents/Metric%20system.pdf, https://www.nist.gov/pml/weights-and-measures/si-units-mass, http://www.thinkmetric.org.uk/principles.html, http://www.thinkmetric.org.uk/convert.html, http://www.montereyinstitute.org/courses/DevelopmentalMath/COURSE_TEXT_RESOURCE/U06_L2_T1_text_final.html, comprendre le Système international d'unités, consider supporting our work with a contribution to wikiHow, The base unit for measuring volume is the, The base unit for measuring length or distance is the, Due to a historic quirk, the base unit for mass actually is the. Log In or Register to continue Although the symbol for microgram is no longer approved for use when writing medication orders, it may be seen on some medication labels (e.g., Lanoxin tablets, Lanoxin injectable, Lanoxin elixir for pediatric use), and you should be familiar with the meaning. Lowercase letters are used more often than capital letters. Milli* one hundredth part of Microgram—abbreviated as mcg. When prefixes are used in combination with the basic unit, the first letter of the prefix and the first letter of the unit of measure are written together in lowercase letters. This article has 27 testimonials from our readers, earning it our reader-approved status. 1 inch is 25.4 mm. What number system does the metric system use? Millimeter = 1/1000 of a meter. ", "Helped explain the metric system in a concise way. The basic prefixes you'll encounter most often are kilo-, hecta-, deka-, deci-, centi-, and milli-. Milligram—abbreviated as mg. At a quick glance these abbreviations appear similar; however, confusing these two units can result in lethal consequences for a client. 1 inch is 2.54 centimeters; but you can just multiple 1 inch by 2.5 with a tiny error rate. Meter, which is used for linear (length) measurement, is not used in the calculation of dosages. In the 21st century, every country except Liberia, Myanmar, and the United States of America use the metric system. b) Liter—the basic unit for volume (liquid) If you're familiar with computer memory measurements, such as megabytes and gigabytes, you're already familiar with the metric system prefixes. cubic millimeter (mm3)—cubic millimeter is a unit of volume of three-dimensional space (length × width × height). Therefore 67 milligrams = 67 thousandths of a gram. one millionth part of Instead of viewing metric measures as a "translation" of Imperial measurements, think about how you originally learned Imperial measurements. Example 2: The trouble is that metric units can quite often be either too big or too small for everyday use. The degree of magnitude is determined by counting the number of rungs away from the base unit. Kilo is a common prefix used to identify a measure larger than the basic unit. Level 2 Use, convert and calculate using metric and, where appropriate, Imperial measures. This helped me to understand the total system and how to use the KHUDCM system to easily use it. An egg weighs about 50 grams. Although a few medications are still prescribed in apothecary and household terms, the nurse will find that the majority of medication calculation and administration skills involve familiarity and accuracy with the metric system to administer medications safely. 3. Include your email address to get a message when this question is answered. Tags: Calculate with Confidence This broke it down in simple terms. The farthest restaurant is 1 kilometer away, but all the other restaurants are a number of meters away. Convert measures within the metric system The metric system is more precise than the apothecary and household systems; therefore it has become the system of choice for the calculation of dosages. The prefixes above, or to the left, of the base unit are a magnitude larger than the base unit. Therefore 67 milligrams = 67 thousandths of a gram. Therefore 1 mm3 of blood contains between 5,000 and 10,000 white blood cells (5,000/mm3 and 10,000/mm3). Ask most people why they don’t use metric measurements and the usual response will be, “I don’t understand metric”, “it’s too complicated” or “I’m too old to start using it”.

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