0.45 × × 2.3dm2030cm
0.8升0.8立方分米
÷8=
20×75%=
×=
-=
1.8÷0.18=
0.8÷=
74%-63%=
÷25%=
910÷70=
4.6+6.4=
1+2%=
120÷50%=
×7.2=
×0÷3=
×98=