0.25*4*9.81=?3.7*1.9+36.7*0.1=?8.45-0.45*0.6=?0.73*99=?

0.25*4*9.81=?3.7*1.9+36.7*0.1=?8.45-0.45*0.6=?0.73*99=? 13.7*0.25-3.7/4的简便算法 =13.7/4-3.7/4为什么都÷4?=(13.7-3.7)/4 =10/4 2.5 能巧算的要巧算：1 8.64/{64.8-（48.6-2.7*2）} 2 3.7*4.7+6.3*3.7-3.7 32.5*1.9+25*0.71+0.25*1.0(4) (12.5+12.5+12.512.5）*2.5 matlab遗传算法实例求指导个这样的函数y=(0.0206*x(2)^2/(2*9.81*x(1))+(0.5*(1-(x(2)/(4*x(3)*9.81*(x(4)-1040)/(3*0.43*1040))^0.5*(1-(x(3)/x(1))^2)*exp(-(2.65*x(5)-3.32*x(5)^2.2))))+((0.25*(x(2)/(4*x(3)*9.81*(x(4)-1040)/(3*0.43*1040))^0.5*( 简便计算：13.7×0.25-3.7/4 13.7×0.25-3.7÷4简便 能巧算的要巧算：（1 ) 8.64/{64.8-（48.6-2.7*2）} （2 ) 3.7*4.7+6.3*3.7 ( 3 ) 2.5*1.9+25*0.71+0.25* 13.7×0.25减3.7÷4 简算什么算 13.7*0.25-3.7/4的简便算法是什么 3.7*0.25+6.3/4,用简便算法计算 9.81*0.1+0.5*9.81+0.049*981=?怎样简算 2.5x(1.9+1.9+1.9+1.9)=? 【1.9+19%乘以（4.8-2.4）】除以（53乘以0.25+30.6乘以0.25）=? 关于数学线性回归的问题.求技术帝解答!高分!x1=[-6.1,-0.2,7.3,1.9,-1.3,-8.3,14,-7.2,-3.8,-6.8,3.7,14.8,1.9,14.1,1.9,9.9,7.7,4,9.8,10,-3.2,-1.2,-13,10.3,3.7,18,3.3,-1.3] x2=[5,-1,9,-6,-1,-4,-2,-2,-2,0,6,2,2,0,0,2,1,-3,6,2,0,2,-9,7,0,3, 0.25*5.2*1.9简便计算 （）:0.25=4 13.7*0.25-3.7*0.25简便计算 19/24-1/4-3/8 0.25×3.7×0.4 6.4×0.25+3.6÷4 简算全部