直接写得数．
0.2³=                           9.7+0.03=             78×99+7.8=         2﹣0.2%=
×0÷0.18=                    +=                 1﹣×4+4×=      0.18÷0.2=
1.5×8.4+3×0.3+15×10%=       30×（+﹣）=