1.8除以2.4乘以4.6的简便运算是

问题描述:

1.8除以2.4乘以4.6的简便运算是

∵1.8=0.3*6
4.6=2*2.3
2.4=0.4*6
∴(1.8*4.6)/2.4
=(0.3*6*2*2.3)/0.4*6
=4.9/2
=2.45