不计算,直接在横线里填上>、<或=.0.175÷0.25×4 0.175÷(0.25×4)0.448÷32×0.9 0.448×0.9÷320.23÷5÷0.4 0.23÷(5×0.5)(3.2+0.12)÷0.8 3.2÷0.8(7.8+2.2)÷0.25 4.1÷0.25+5.8÷0.25.
=3:12= ÷4.
0.6= 成= : == %
3: =12÷ =0.75== %= (折数)
5: =0.25=3÷ == %.
18: ==七五折= %