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The number data type is a double-precision floating-point number. You can manipulate numbers using the arithmetic operators addition (+), subtraction (-), multiplication (*), division (/), modulo (%), increment (++), and decrement (--). You can also use methods of the built-in Math and Number classes to manipulate numbers. The following example uses the sqrt() (square root) method to return the square root of the number 100:
Math.sqrt(100);
For more information, see Numeric operators.
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