怎样简便怎样算.8.2×99+8.2 4.8×0.25 0.78×9.98.96×0.32﹣0.96×0.32 2.6×1.9÷2.6×1.9.
65×8.7+6.5×0.23﹣0.65.
1997×19961996﹣1996×19971997.
99×101 335+270+130+265 625﹣180﹣22535×99+35 175×55+25×55 50×25×20×40.
简便运算.×+× 1.25×2.5×8 136﹣64﹣46 1.36+5.4+8.64+1.6.