口算. 45×0.2= 0.88÷0.44= 2﹣1.2= 12.5×0.8= (1.5+0.25)×4=4.5÷0.9= 8.5×10= 5.2÷0.2= 1.2×6= 12﹣6.5﹣3.5=
列竖式计算.4.09﹣2.5 3.58×0.24 0.918÷2.7.
直接写得数1﹣0.32= 1÷0.25= 0.01÷0.1÷0.1= 10.2+8=1.4×0.5= 4.5×0.2÷4.5×0.2= 0.125×8= 0.5÷2×0.5×2=
直接写出得数.2.7+1.8= 6.43﹣0.3= 0.85×2= 8.4÷4= 0.36+0.14= 9÷0.01=0.2×0.1= 1﹣0.01= 0.72÷0.9= 0.12= 0.7﹣0÷0.7= 4×0.25+0.75=
直接写得数 6.3+3.7= 9﹣1.8= 1.4×0.5= 0.49÷0.7= 3.9﹣0.39=9.2×0.01= 3×0.2×0.5= 0.2÷0.125= 1﹣0.2÷0.2= (1.42+2.91)×0=
0.24+0.56= 6﹣0.32= 0.15×3= 8.4÷4=0.1÷0.01= 0.028÷4= 0.1×0.1﹣0.01= 0.25×1.3×0.4=