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Customary Unit Conversions | MathHelp.com
By MathHelp.com
This lesson covers complex numbers. Students learn that a complex number is the sum or difference of a real number and an imaginary number and can be written in a + bi form. For example, 1 + 2i and -- 5 - i root 7 are complex numbers. Students then learn to add, subtract, multiply, and divide complex numbers that do not contain radicals, such as (5 + 3i) / (6 - 2i). To divide (5 + 3i) / (6 - 2i), the first step is to multiply both the numerator and denominator of the fraction by the conjugate of the denominator, which is (6 + 2i), then FOIL in both the numerator and denominator, and combine like terms.
Subtracting Decimals | MathHelp.com
By MathHelp.com
This lesson covers customary unit conversions. Students learn the following customary units of measurement: inch, foot, ounce, ton, fluid ounce, pint, gallon, yard, pound, cup, quart, and so on. Students also learn to convert from one customary unit of measurement to another using the following conversion factors: 60 seconds = 1 minute, 7 days = 1 week, 3 feet = 1 yard, 16 ounces = 1 pound, 4 quarts = 1 gallon, and so on. Students are then asked to solve problems using conversion factors, such as 18 feet = ____ inches.
Units of Measurement - MathHelp.com - Pre Algebra Help
By yourteachermathhelp
Students learn that customary units can be converted to metric units and metric units can be converted to customary units using the following conversion factors: 1 mile = 1.6 kilometers 1 liter = 2.1 pints 1 inch = 2.54 centimeters and so on. Students are then asked to solve problems using these conversion factors such as 10 kilometers = ____ miles. Students are also asked to determine which customary unit of measurement and which metric unit of measurement are used to measure a given object. For example milk in a bottle would be measured in gallons (customary) or in liters (metric). Video is good quality and good for all students as a review or initial learning of the topic.
