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2. Carry (arithmetic) - Wikipedia

   en.wikipedia.org/wiki/Carry_(arithmetic)

   It is part of the standard algorithm to add numbers together by starting with the rightmost digits and working to the left. For example, when 6 and 7 are added to make 13, the "3" is written to the same column and the "1" is carried to the left. When used in subtraction the operation is called a borrow.

3. Decimal floating point - Wikipedia

   en.wikipedia.org/wiki/Decimal_floating_point

   A simple method to add floating-point numbers is to first represent them with the same exponent. In the example below, the second number is shifted right by 3 digits. We proceed with the usual addition method: The following example is decimal, which simply means the base is 10. 123456.7 = 1.234567 × 10 5 101.7654 = 1.017654 × 10 2 = 0. ...

4. Signed-digit representation - Wikipedia

   en.wikipedia.org/wiki/Signed-digit_representation

   In mathematical notation for numbers, a signed-digit representation is a positional numeral system with a set of signed digits used to encode the integers.. Signed-digit representation can be used to accomplish fast addition of integers because it can eliminate chains of dependent carries. [1]

5. Digital sum - Wikipedia

   en.wikipedia.org/wiki/Digital_sum

   The digit sum - add the digits of the representation of a number in a given base. For example, considering 84001 in base 10 the digit sum would be 8 + 4 + 0 + 0 + 1 = 13. The digital root - repeatedly apply the digit sum operation to the representation of a number in a given base until the outcome is a single digit. For example, considering ...

6. Floating-point arithmetic - Wikipedia

   en.wikipedia.org/wiki/Floating-point_arithmetic

   For example, if one is adding a very large number of numbers, the individual addends are very small compared with the sum. This can lead to loss of significance. A typical addition would then be something like 3253.671 + 3.141276 ----- 3256.812 The low 3 digits of the addends are effectively lost.

7. Mnemonic major system - Wikipedia

   en.wikipedia.org/wiki/Mnemonic_major_system

   The major system (also called the phonetic number system, phonetic mnemonic system, or Hérigone's mnemonic system) is a mnemonic technique used to help in memorizing numbers. The system works by converting numbers into consonants, then into words by adding vowels. The system works on the principle that images can be remembered more easily than ...