Question

2.5×0.6—1.8×0.5简便计算

Answer 1

2.5ⅹ0.6-1.8ⅹ0.5
=2.5ⅹ0.6-3ⅹ0.6x0.5
=2.5x0.6-1.5x0.6
=(2.5-1.5)ⅹ0.6
=1X0.6
=0.6

Answer 2

2.5×0.6-1.8×0.5
=2.5×0.6-3×0.6×0.5
=2.5×0.6-0.6×1.5
=0.6×（2.5-1.5）
=0.6×1
=0.6