9.9×545.4怎么用脱式
54×10.1脱式计算 -
=54X10十54X0.1 =540十5.4 =545.4
3.6×1.5×101 =3.6×5×0.3×101 =18×0.3×101 =5.4×101 =5.4×(100+1)=5.4×100+5.4 =540+5.4 =545.4
=54X10十54X0.1 =540十5.4 =545.4
3.6×1.5×101 =3.6×5×0.3×101 =18×0.3×101 =5.4×101 =5.4×(100+1)=5.4×100+5.4 =540+5.4 =545.4
(1)130÷0.4÷2.5 =130÷(0.4×2.5)130÷1=130(2)5.4×101=5.4×(100+1)5.4×100+1×5.4=545.4(5)1.6×55.4-55.4×0.6=(1.6-0.6)×55.4=1×55.4=55.4(6)0.5×37×0.2=0.5×0.2×37=0.1×37=3.7 希望你能满意。