合理灵活地计算:125×(73×8) 25.23﹣7.85﹣1.15 302×99+3027200÷4÷25 25×32×125 45×10225+75﹣25+75 312×4+188×4 27.7+3.23+16.77+23.
用简便方法计算. (2.5+3.5)×42.5×28.
用简便方法计算 . 25×2×4×1599×99+99146+158﹣46+42 (20+4)×25.
35×(7×3)=35×7+35×3. .
计算下面各题,能简算的要写出简算过程. ①6.72+2.08×4×1.5 ②12.56÷2.5÷0.4 ③2.85×4.7+28.5×0.53 ④9.88÷[5×(7.34﹣6.96)] ⑤2.5×3.2×1.25 ⑥0.56×99.
计算下面各题,怎样简便怎样算. 0.85×2010.5×4.85×82.5×48﹣48 2.7+4.29+2.71+6.31.2×3.5+8.8×3.5.