672-672÷12×7简便计算

Question

如题所述

Answer 1

请采纳

Answer 2

愿式=672x（1-7/12）
=672x5/12
=672➗12x5
=56x5
=280

Answer 3

672-672÷12×7
=672-600÷12x7-72÷12x7
=672-50x7-6x7
=672-350-42
=630-350
=280本回答被网友采纳