In math, the mean is the average of a set of numbers. To determine the mean, add all numbers in a set and take this answer and divide it by how many numbers are in the set.
Know MoreStudents often learn about mean, median and mode together. All of these are a form of averages and they are common in pre-statistics courses. The median describes the middle value in a set of numbers. To determine the median, write all numbers in numerical order and find the number in the center. Mode is the most frequent number in a set. If there is a repeat of a number, that is the mode, if there is no repeat, there is no mode.
Learn MoreThe invention of multiplication cannot be attributed to a particular individual or society because it can be traced to several ancient civilizations, including Egypt, China, Babylonia and India. Each civilization employed a distinct technique to multiply numbers. The methods involved repetitive additions of numbers.
Full Answer >To round a decimal, identify the place value you want to round, which is referred to as the rounding digit. Identify the number immediately to the right of the rounding digit. If the number immediately to the right of the rounding digit is less than five, don't change the rounding digit, and drop all digits to the right. If the number to the right of the rounding digit is greater than five, add one to the rounding digit, and remove all digits to the right.
Full Answer >An individual can use one of 13 ways to make 25 cents in change. A total of 25 cents in change can be made from as little as a single quarter to as many as 25 pennies.
Full Answer >An area model is a graphical representation of a multiplication or division problem. Area models are used in math to help students better visualize what is happening in a problem, creating a conceptual understanding of often abstract problems. For problems involving smaller numbers, drawing the model on a grid can make calculations easier.
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