In this case, the summands are four squares and five squares. Note that the plus sign (+) indicates the operation performed on the two terms. The above diagram is an illustration of the process of addition. (Or, if you prefer, substitute anything you like for "squares"-dogs, bananas, people, rocks, or anything else.) ![]() Thus, if we add one set of four squares to another set of five squares, we get a total of nine squares. Addition is simply the combination of distinct sets of like entities (and we must stress the word like). (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.Īddition and subtraction are two complementary operations-we can actually define subtraction in terms of addition. In this way, you can practice your math skills without simply relying on a calculator. ![]() Even cutting up a sheet of paper into sections is sufficient just write the numbers and an operation on one side (such as 3 8) and the answer (24, for our example) on the other. ![]() If you have difficulty performing the basic operations for simple numbers, one way to improve is through the use of flash cards.
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