0.2+0.8=        8.8+0.12=         8.8-1.2=        0.38×5=        0.9-0.09=

7.4-0.77=        1.2×5=          1.6-0.4=        0.35+0.55=        0.125×8=

4.4＋5＝         0.44＋0.16＝         0.45÷9＝           3.2＋4.8＋0.6＝

5－0.5＝             20×0.4＝             0.5×10＝          1.93－0.13－0.87＝

0.4＋0.16＝      1－0.13＝      5.6+7＝         8.8－4＝

0.5×8＝            0.24×4＝       0.25×4＝      2.34×100＝

20×30                           0.2×0.3                            

=(2×10)×(3×10)      =(2×0.1)×(3×0.1)

=(2×3)×(10×10)     =(2×3)×(0.1×0.1)

=6×100                 =6×0.01

=600                     =0.06