Which of the following mathematical operations can be used with functions?
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The four basic mathematical operations--addition, subtraction, multiplication, and division--have application even in the most advanced mathematical theories. Thus, mastering them is one of the keys to progressing in an understanding of math and, specifically, of algebra. Electronic calculators have made these (and other) operations simple to perform, but these devices can also create a dependency that makes really understanding mathematics quite difficult. Calculators can be a handy tool for checking answers, but if you rely too heavily on one, you may deprive yourself of the kind of rigorous mental exercises that will help you not just to do math, but to fully understand what you are doing.
If you have difficulty performing the basic operations for simple numbers, one way to improve is through the use of flash cards. Even cutting up a sheet of paper into sections is sufficient; just write the numbers and an operation on one side (such as 38) and the answer (24, for our example) on the other. In this way, you can practice your math skills without simply relying on a calculator. (But if you need the calculator to accurately make your flash cards, by all means, use one!) We assume you have an understanding of basic arithmetic, but if you are at all lacking in this area, you should be able to bring yourself up to speed with a little time and practice.
Addition and Subtraction
Addition and subtraction are two complementary operations--we can actually define subtraction in terms of addition. Addition is simply the combination of distinct sets of like entities (and we must stress the word like). Thus, if we add one set of four squares to another set of five squares, we get a total of nine squares. (Or, if you prefer, substitute anything you like for "squares"--dogs, bananas, people, rocks, or anything else.)
If you have difficulty performing the basic operations for simple numbers, one way to improve is through the use of flash cards. Even cutting up a sheet of paper into sections is sufficient; just write the numbers and an operation on one side (such as 38) and the answer (24, for our example) on the other. In this way, you can practice your math skills without simply relying on a calculator. (But if you need the calculator to accurately make your flash cards, by all means, use one!) We assume you have an understanding of basic arithmetic, but if you are at all lacking in this area, you should be able to bring yourself up to speed with a little time and practice.
Addition and Subtraction
Addition and subtraction are two complementary operations--we can actually define subtraction in terms of addition. Addition is simply the combination of distinct sets of like entities (and we must stress the word like). Thus, if we add one set of four squares to another set of five squares, we get a total of nine squares. (Or, if you prefer, substitute anything you like for "squares"--dogs, bananas, people, rocks, or anything else.)
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