0.75×0.66=11.05×0.04=0.43×2.25=4.82×11.23=
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.
能用简算的用简便算法计算,写出简算过程. 5.4×2.08﹣5.4×1.087.68×0.25×4 8.2×2.5+17.5(12.4+16.8)÷0.4.
按要求计算 (1)化简比 ①:0.75; ②分米:厘米 (2)求未知数x ①x:=51:17;②×7+4x=850% (3)简便计算 ①4.05﹣2.86﹣0.14;②7×0.6+0.4×7;③2.25×3.14×4+3.14;④(﹣)×17×5.