请用简便方法计算二点零四乘以零点二五乘以七点二乘以十二点五

2024-12-17 11:44:29
推荐回答(3个)
回答1:

2.04*0.25*7.2*12.5
=0.51*(4*0.25)*9*(0.8*12.5)
=0.51*1*9*10
=45.9

回答2:

2.04*0.25*7.2*12.5
=4*0.51*0.25*0.9*8*12.5
=0.51*0.9*100
=45.9

回答3:

2.04*0.25*7.2*12.5=2.04*0.25*4*1.8*12.5=2.04*0.9*25=10.2*0.9*5=51*0.9
=45.9