Wiktionary
subtractions
n. (plural of subtraction English)
Usage examples of "subtractions".
The teacher was covered with chalkdust and the blackboards were covered with simple additions and subtractions, by multiplicands, multipliers, and products, by dividends, divisors, and quotients.
Long division was taught as a set of rules from a cookbook, with no explanation of how this particular sequence of short divisions, multiplications and subtractions got you the right answer.