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Mathematical Sign for SquareTo show that a number is squared, a small 2 is placed to the top right of the number. Like this:
These signs are the same as saying "3 squared, 4 squared, and x squared."This is also called a superscript or the power of the number. The number to the "power of 2" is the same as the number "squared" or the "square" of the number.Why is it called square?You can visualize the square of a number as an actual square. Here are some example squares of different numbers:
List of Integer SquaresHere is a list of squares from 1 to 12. You may already know these if you memorized the multiplication tables. These numbers are also called perfect squares.
Square RootThe square root is just the opposite of the square. You can think of it as the "root" of the square or the number that was used to make the square.
Sign for Square RootThe sign for square root looks like this:
Some examples of square roots:
Finding the Square RootThere really isn"t a good way to find a square root other than using your calculator. One way is to try the guess and check method. This is where you guess the square root, check it out, and then make a better guess.Example:What is the square root of 32?We know 5x5 = 25 and 6x6 = 36, so the square root of 30 is somewhere between 5 and 6. We"ll start out by guessing 22.214.171.124 x 5.5 = 30.25That"s pretty close. We can now change our guess slightly to 126.96.36.199 x 5.6 = 31.365.7 x 5.7 = 32.495.65 x 5.65 = 31.9225Depending on how accurate a number we need for an answer, 5.65 is a good estimate for the square root of 32.
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Things to RememberThe square is the number times itself.The square is the same as the power of 2.The square root is the opposite of the square.Kids Math Subjects
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