Carry (arithmetic)
In elementary arithmetic a carry is a digit that is transferred from one column of digits to another column of more significant digits during a calculation algorithm. When used in subtraction the operation is called a borrow. It is a central part of traditional mathematics, but is often omitted from curricula based on reform mathematics, which do not emphasize any specific method to find a correct answer.
Read more about Carry (arithmetic): Manual Arithmetic, Computing
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“The best thing a man can do for his culture when he is rich is to endeavor to carry out those schemes which he entertained when he was poor.”
—Henry David Thoreau (1817–1862)