= = = =
0.25= 0.76÷0.4= 1.6×12%= 1﹣4÷8=
3.14×11= 5.06+1.2= 0.9×99+0.9= =
①15.28﹣3.6﹣3.4
②()×7.2
③
④7.5÷[(6.8﹣4.3)×0.12]