3081÷79= 39×79=
2元5角=元 3.05t=tkg
6.176.08 4.2004.2 5.78cm0.058m
5.38+4.62= 8-5.75= 0÷100= 2.6+8=
9.52×100= 74÷100= 25×40= 15-5×0=