When the sum of two numbers A and B is specified, the first number A is called addend and the second number B is called addend. In the new textbook, in the addition formula, the two numbers added are called addends, that is, there is no difference between addend and addend.
1. If one addend is 0, its sum is equal to the other addend itself.
Adding a number is equal to subtracting the reciprocal of this number.
Appendix Kabu Park Jung Su Appendix
Observe that follow equation:
30+25=55,55^2=3025
People call a number with this characteristic Capulet Plus number, that is, for an n-bit natural number, n' is divided into two halves, the n bit on the right is a number, and the rest bits on the left are another number. If the sum of these two numbers is exactly equal to n, then n and N' are called a pair of Kabu Park Jung Su plus signs, where n is the base of Kabu Park Jung Su plus sign and N' is the square of Kabu Park Jung Su plus sign.