In the Decimal System there are Ones, Tens, Hundreds, etc. In Binary there are Ones, Twos, Fours, etc, like this: This is 1×8 + 1×4 + 0×2 + 1 + 1× (1/2) + 0× (1/4) + 1× (1/8) = 13.625 in Decimal. Numbers can be placed to the left or right of the point, to show values greater than one and less than one. 10.1. 25 2 25 2. Convert the fraction to a decimal by dividing the numerator by the denominator. 12.5 12.5. Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor. Hundredth. One hundredth is one part of a whole or a group that is broken up into 100 equal parts. One hundredth can be written in fractional form as or in decimal form as 0.01. Below is a visual representation of a hundredth. The single green square in the above 10 by 10 array is a representation of one hundredth because it is 1 of 100 squares.
To convert from decimal inches to fractional inches: Choose a denominator d that's a power of 2 (2, 4, 8, 16, etc.). Take the decimal part of the measurement in inches. We'll call it x. Multiply the decimal part by the denominator: x × d. Round up your result. This will be the numerator n of the fraction. Indicate the decimal part as n/d inches.
To get a decimal using the division method, simply divide the numerator 21 by the denominator 2: 21 (numerator) ÷ 2 (denominator) = 10.5. And there you go! We got 10.5 as the answer when you convert 21/2 to a decimal. To convert a decimal to a fraction, take the decimal number and write it as the numerator (top number) over its position value. As an example, for 0.4 you'll find the four is in the tenths position. To turn it into a fraction, place the 4 over 10, to give 4/10. You can then simplify the fraction if needed. In this example, we can simplify to 2/5.
In binary, 8 is represented as 1000. Reading from right to left, the first 0 represents 2 0, the second 2 1, the third 2 2, and the fourth 2 3; just like the decimal system, except with a base of 2 rather than 10. Since 2 3 = 8, a 1 is entered in its position yielding 1000. Using 18, or 10010 as an example:
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    • 21 2 as a decimal