1.28×0.921.28 a÷0.2a(a≠0) 6.42×3.23.2×6.42
0.6×0.6= 0.23×4= 1÷0.25= 7.65÷0.01=
9.6÷0.3= 0.8×0.125= 8.97×12.3×0= 0.32=