Add

Addition is a mathematical operation that represents combining collections of objects together into a larger collection

Subtraction

Subtraction is a mathematical operation that represents the removal of an object from a collection.

Others

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Addition subtraction assignment has from question Can't understand x *= y+1 output |

This took 6 steps but leads to a number that could be arrived at in 5 steps subtract 1 divide 3 times add from question Minimum number of steps to reduce number to 1 |

Addition and subtraction is from question What is the performance impact of using int64_t instead of int32_t on 32-bit systems? |