ATI TEAS MATH UNDERSTANDING MEASUREMENTS AND CONVERSIONS AT ATI - - PDF document

ATI TEAS MATH UNDERSTANDING MEASUREMENTS AND CONVERSIONS

AT ATI TEAS MAT ATH ME MEASUREME MENTS AND CO CONVERSIONS

UNDERSTANDING MEASUREMENT AND CONVERSION QUESTIONS Measurement and conversion questions are vitally important in any healthcare program, especially in nursing. You will be required to understand how to process these conversions to provide safe and efficient patient care through medication administration or other

• tasks. Measurement and conversion

questions ask applicants to coNvert units of measurements between the metric system and English system.

AT ATI TEAS MAT ATH ME MEASUREME MENTS AND CO CONVERSIONS

UNDERSTANDING ENGLISH SYSTEM CONVERSIONS The English system of measurement uses weight, volume, and length as units of measure.

• Weight is measured in ounces, pounds, and tons
• Volume is measured in ounces, cups, pints, quarts,

and gallons

• Length is measured in inches, feet, yards, and miles

To understand conversions in the English system, you must know the equivalent measures for each step in the given measurement system.

AT ATI TEAS MAT ATH ME MEASUREME MENTS AND CO CONVERSIONS

UNDERSTANDING ENGLISH SYSTEM CONVERSIONS Here are some examples of measurement equivalents

Measurement Type Equivalents Weight 16 ounces 2,000 pounds = 1 pound = 1 ton Volume 8 ounces 2 cups 2 pints 4 quarts = 1 cup = 1 pint = 1 quart = 1 gallon Length 12 inches 3 feet 5,280 feet = 1 foot = 1 yard = 1 mile

AT ATI TEAS MAT ATH ME MEASUREME MENTS AND CO CONVERSIONS

UNDERSTANDING Metric SYSTEM CONVERSIONS The metric system of measurement use weight, volume, and length, but it uses a different set of units for measurement.

• The basic unit of weight measurement is the gram
• The basic unit of volume measurement is the liter
• The basic unit of length measurement is the meter

In the metric system, each unit of measurement starts with a prefix that indicates whether the measurement is smaller than the basic unit or larger than the basic unit.

AT ATI TEAS MAT ATH ME MEASUREME MENTS AND CO CONVERSIONS

UNDERSTANDING Metric SYSTEM CONVERSIONS Here are some examples of measurement equivalents

Prefix Measurement Compared to Basic Unit Weight Volume Length Kilo- 1,000 times Kilogram (kg) Kiloliter (kL) Kilometer (km) Hecto- 100 times Hectogram (hg) Hectoliter (hL) Hectometer (hm) Deka- 10 times Dekagram (dag) Dekaliter (daL) Dekameter (dam) Basic Unit Basic Unit Gram (g) Liter (L) Meter (m) Deci- 1/10 Decigram (dg) Deciliter (dL) Decimeter (dm) Centi- 1/100 Centigram (cg) Centiliter (cL) Centimeter (cm) Milli- 1/1,000 Milligram (mg) Milliliter (mL) Millimeter (mm)

AT ATI TEAS MAT ATH ME MEASUREME MENTS AND CO CONVERSIONS

UNDERSTANDING CONVERSIONS between systems To convert between measurements in either English and metric systems, you need to know the approximate equivalents between different units. Here are some examples of measurement equivalents.

Metric Measurement English Equivalent 1 kilogram Approximately 2.2 pounds 1 liter Approximately 1 quart 2.5 centimeters Approximately 1 inch 1 meter Approximately 1 yard

AT ATI TEAS MAT ATH ME MEASUREME MENTS AND CO CONVERSIONS

UNDERSTANDING temperature conversions In the English system of measurement, temperature is measured on the Fahrenheit

• scale. In the metric system of measurement,

temperature is measured on the Celsius scale. Here are some examples of measurement equivalents.

Celsius (Metric) Fahrenheit (English) Freezing Point 32 Body Temperature 37 98.6 Boiling Point 100 212

AT ATI TEAS MAT ATH ME MEASUREME MENTS AND CO CONVERSIONS

UNDERSTANDING temperature conversions To obtain an approximation of Celsius Temperature from a Fahrenheit Measurement, subtract 30 and then divide the total by 2. For an exact conversion, the formula is ! = # − 32 ' 5 9

Celsius (Metric) Fahrenheit (English) Freezing Point 32 Body Temperature 37 98.6 Boiling Point 100 212

AT ATI TEAS MAT ATH ME MEASUREME MENTS AND CO CONVERSIONS

UNDERSTANDING measurement tools

Measurement tools are tested on the ATI TEAS using three categories, based on weight, volume, or length.

• Measurement tools for weight
• Scales are used traditionally and vary in degrees of

accuracy

• Measurement tools for volume
• Pipettes are measuring tubes or drops to measure small

amounts of liquid with high precision

• Measuring cups, flasks, and beakers provide less precise

measurements for larger amounts of liquid

• Graduated cylinders vary in size and are less precise than

pipettes but more precise than measuring cups, flasks, and beakers

• MEASUREMENT TOOLS FOR LENGTH
• CALIPERS ARE THE MOST PRECISE MEASURING TOOL

AND TAKE MEASUREMENTS USING TWO POINTS

• RULERS ARE THE NEXT MOST PRECISE TOOL, FOLLOWED

BY YARDSTICKS AND METERSTICKS

• TAPE MEASURES ARE USED FOR MEASURING LONG

DISTANCES

• ODOMETERS MEASURE THE DISTANCE TRAVELED BY A

VEHICLE AND WOULD BE APPROPRIATE FOR THE MEASUREMENT TAKEN IN MILES OR KILOMETERS