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2. List of numeral systems - Wikipedia

   en.wikipedia.org/wiki/List_of_numeral_systems

   The smallest base greater than binary such that no three-digit narcissistic number exists. 80: Octogesimal: Used as a sub-base in Supyire. 85: Ascii85 encoding. This is the minimum number of characters needed to encode a 32 bit number into 5 printable characters in a process similar to MIME-64 encoding, since 85 5 is only slightly bigger than 2 ...

3. Unary numeral system - Wikipedia

   en.wikipedia.org/wiki/Unary_numeral_system

   Addition and subtraction are particularly simple in the unary system, as they involve little more than string concatenation. [9] The Hamming weight or population count operation that counts the number of nonzero bits in a sequence of binary values may also be interpreted as a conversion from unary to binary numbers. [10]

4. Addition - Wikipedia

   en.wikipedia.org/wiki/Addition

   Addition (usually signified by the plus symbol +) is one of the four basic operations of arithmetic, the other three being subtraction, multiplication and division. [2] The addition of two whole numbers results in the total amount or sum of those values combined. The example in the adjacent image shows two columns of three apples and two apples ...

5. Non-standard positional numeral systems - Wikipedia

   en.wikipedia.org/wiki/Non-standard_positional...

   In some systems, while the base is a positive integer, negative digits are allowed. Non-adjacent form is a particular system where the base is b = 2.In the balanced ternary system, the base is b = 3, and the numerals have the values −1, 0 and +1 (rather than 0, 1 and 2 as in the standard ternary system, or 1, 2 and 3 as in the bijective ternary system).

6. Arithmetic - Wikipedia

   en.wikipedia.org/wiki/Arithmetic

   Download as PDF; Printable version; ... known as the base, is raised to the power of another number, known as the exponent. ... addition and multiplication tables ...

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8. Positional notation - Wikipedia

   en.wikipedia.org/wiki/Positional_notation

   (465 7 = 243 10) 10 b = b for any base b, since 10 b = 1×b 1 + 0×b 0. For example, 10 2 = 2; 10 3 = 3; 10 16 = 16 10. Note that the last "16" is indicated to be in base 10. The base makes no difference for one-digit numerals. This concept can be demonstrated using a diagram. One object represents one unit.

9. Elementary arithmetic - Wikipedia

   en.wikipedia.org/wiki/Elementary_arithmetic

   Example of addition with carry. The black numbers are the addends, the green number is the carry, and the blue number is the sum. In the rightmost digit, the addition of 9 and 7 is 16, carrying 1 into the next pair of the digit to the left, making its addition 1 + 5 + 2 = 8. Therefore, 59 + 27 = 86.