如果★×△=50,那么★×(△÷5)=。
3.56×2.73.56 5.34×1005340÷100
6.32×2.66.32×3.5 9.7×6.697×0.66
3.86×10= 0.4×0.3= 3.9×0.01= 9.73÷10=
98.4÷100= 1-0.55= 2.5×4= 0.5+0.43=
7.83÷9= 7.2÷1.2=