赚现金
计算.(能简算的要写出简算过程)①4.52+0.61+1.39+6.48 ②4.27﹣(1.96﹣1.73)③(294.4﹣19.2×6)÷(6+8)④12.5×0.76×0.4×8×2.5.
试题篮