16.9×16= | 169×1.6= |
169×0.16= | 1.69×16= |
4.09×0.94.09 2÷4.52÷5.4 40.9÷0.2540.9×0.25
0.58÷0.990.58 6.3÷0.16.3×10 9.6×0.980.96×98
①2.3×8=
②2.3×0.8=
③0.23×0.8=
①3.9÷1.3=
②3.9÷0.13=
③0.39÷0.13=
40×8=320
(40×2)×(8×2)=
(40×3)×(8×3)=
(40×4)×(8×4)=
(40×8)×(8×8)=
我发现: