用递等式计算,能简便计算的用简便方法计算(1)37.7÷13+1.8×2.4(2)1.25×3.2×0.25(3)1.06×(2.9+1.6)÷0.01(4)6.27×5.2+5.8×6.27﹣6.27(5)50.5÷[(15.6﹣3.5×4)÷3.2].
用简便方法计算. (8+40)×25(125×25)×(8×4) 34×10272×125.
用简便方法计算下面各题. 143+69+357+43136×98+36×2125×88 2300÷25÷103×12234×15﹣15×134.
99×34.
简便算法. 7.28﹣3.16﹣2.846.3+18.2+13.77.6×10.18.16×2.4+7.6×8.16.
用简便方法计算. 5.39+5.25+4.61+4.75 5.83﹣(0.46+1.83)﹣0.54.