Question

8.89-2.89×1.5用简便计算？

Answer 1

把1.5拆分成1+0.5，然后用分配律进行计算，具体过程如下：
8.89-2.89×1.5
=8.89-2.89×（1+0.5）
=8.89-2.89-2.89*0.5
=6-2.89×0.5
=4.555
=7.445

Answer 2

8.89－2.89×1.5
＝8.89－2.89×1－2.89×0.5
＝6－1.445
＝4.555

Answer 3

关于算式8.89-2.89×1.5进行简便的计算，详细的操作如下：
8.89-2.89×1.5
=(8.89-2.89)×1.5
=6×1.5
=9

Answer 4

8.89－2.89×1.5
＝8.89－2.89×（1+0.5）
＝8.89－（2.89+2.89×0.5）
＝8.89－2.89－1.445
＝6－1.445
＝4.555

Answer 5

8.89-2.89X1.5
=8.89-2.89X(1+0.5)
=8.89-2.89-1.445
=6-1.445
=4.555