5.21×1.2×0.55 15.2×1.1+3.8×10.1-3.2
0.6(χ-0.4)+3.8=1.2χ+0.56
3.8×1.28-0.2+7.2×1.25
化简下列各数 -(-68),-(+0.75),-(+3.8)
4.02+5.4+0.98 5.17-1.8-3.2 13.75-(3.75+6.48)
3.8*10.1-0.38简便计算
3.8×10.1 55×9.9 能简就简
2.9-(1.9+0.8) 4.32+17.61+5.68+2.39 37.4×10.1 5.7+
15.2×8.8+2.2×15.2-15.2的简算
4.7×15.2+47×0.26-78乘0.47简便计算
我很棒,能简算的要简算.7.5×1.2 3.8乘0.99 0.25乘1.25乘3.2
简便计算3.6×7.2+3.6×1.1-8.3×2.6
0.32×6.7+3.2×0.43-0.32 简算