82.57÷=3.59 ×0.23=0.8257
0.63÷0.9=
60×0.5=
1÷0.25=
4.5×8=
2.2×0.3=
7.2÷10=
0.51×100=
0.42÷0.07=
(12.5+2.5)×0.8 38.4-[1.2×(13.6-11.6)]
7.1×0.64+9.36 100-(4.5+3.2×25)