12.5×13.07×0.8=××
×4=×+×
①(1÷0.5+0.5÷1)×0.14
②0.4×0.4×1.5×2.5
③6.38×99+6.38
④(200-195.2)÷(8.37+1.23)×0.5
⑤[5.4÷18+(41.47+38.53)×0.1]÷2.5
3.5+2.5= 10﹣0.35= 0.56÷0.7= 20%×5%= 12:2.4=
25×0.8= 9﹣2= 3.75+1= 0÷18= :=