38﹣19=
2.5×4=
=
9﹣0.9=
125×60%=
7.2÷0.4=
4.5a﹣a=
1÷10+=
()×12=
×3÷=
×0=
36×(+-) [1-(-)]÷ 2.5×4.8+75×0.48
2.25×+8.75÷+75% 2.87+5.6﹣0.87+4.4 0.25×32×12.5
答: