12✖️19✖️12的简便方法是什么？

Question

如题所述

Answer 1

12x19x12
=12x12x19
=12x12x(20-1)
=144x(20-1)
=144x20-144x1
=2880-144
=2736

Answer 2

12×12×19
=12×12×（20-1）
=12×20-12×1
=2736

Answer 3

=12*12*(20－1)
=144*20－144
=2880－144=2736

Answer 4

12x19x12
=12X（20-1）x12
=240-12x12
=240-144
=96

Answer 5

12✖️19✖️12的简便方法是什么？
12x19x12
=12x12x19
=12x12x(20-1)
=144x(20-1)
=144x20-144x1
=2880-144
=2736