化简比 128:34 0.54:2.7 0.4米:60厘米.

问题描述:

化简比
128:34           
0.54:2.7         
0.4米:60厘米.

(1)128:34           
=(128÷2):(34÷2)
=64:17;
(2)0.54:2.7
=(0.54÷0.54):(2.7÷0.54)
=1:5;
(3)0.4米:60厘米
=40厘米:60厘米
=40:60
=(40÷20):(60÷20)
=2:3.