Question

60.2-1.15-4.48这道题怎么用简算运算？

Answer 1

答，原式＝（60-1-4）+（0.2-0.15-0.48）＝55+（0.05-0.48）＝55-0.43＝54.57

Answer 2

解：原式=60－1－4+0.2－0.15－0.48
=55+0.05－0.48
=55－0.43
=54.57