口算 0.1×9.02= 1.6×3= 1.2×0.6= 100÷200= 6.2×0.3= 0.7+7.32= 0.6×07= 2.8÷70= 0.9×0.4= 2.1÷7÷0.1=
12.06+5.07+2.9430.34+9.76-10.34
1.3×11.6-1.6×1.3 1--
(48×75×81)÷(24×25×27) 7.5×2.3+1.9×2.5 5-(-) 19.68-(2.97+9.68)
34×3535-35×3434 27000÷125 345345÷15015 347+358+352+349
67×21+18×21+85×79 321×81+321×19