paheko kōaro
1. (noun) inverse operation (maths).
He paheko kōaro te tāpiritanga me te tangohanga: 6 + 2 = 8 8 - 2 = 6. He paheko kōaro te whakarea me te wehe: 6 x 2 = 12 12 ÷ 2 = 6 (TRP 2010:189). / Addition and subtraction are inverse operations: 6 + 2 = 8 8 - 2 = 6. Multiplication and division are inverse operations: 6 x 2 = 12 12 ÷ 2 = 6
