(2-0.1*3)+(4-0.1*5)+(6-0.1*7)+(8-0.1*9)+(10-0.1*11)+(12-0.1*13)=?请给个简便的方法,

(2-0.1*3)+(4-0.1*5)+(6-0.1*7)+(8-0.1*9)+(10-0.1*11)+(12-0.1*13)=?请给个简便的方法, （-0.1）^3-1/4x(2/5)^2 (-2*5)的3次方-(-1又7/9)*(-3/4)的平方-(-1/0.1)*(-0.1)的平方= (1+0.1)+(2+0.1*2)+(3+0.1*3)+...+(99+0.1*99)+(100+0.1*100)等于几? (1+0.1)+(2+0.1*2)+(3+0.1*3)+...+(99+0.1*99)+(100+0.1*100) 3/4×0.1 添上运算符号和括号,使等式成立（1）0.1 0.2 0.3 0.4 0.5=0（2）0.1 0.2 0.3 0.4 0.5=1（3）0.1 0.2 0.3 0.4 0.5=2（4）0.1 0.2 0.3 0.4 0.5=3（5）0.1 0.2 0.3 0.4 0.5=4（6）0.1 0.2 0.3 0.4 0.5=5 2又3/4-{5又1/4-【0.04-(1又5/8-2又1/5)-0.1】+1/5} (-2*5)³-(-1+-7/9)*(-3/4)²-(-1/0.1)²=? 证明:1/2*3/4*5/6*7/8*.*97/98*99/100大于0.1 1+2+3+4+5+6+7+8+9+0.1= （2x-4/5)乘3+0.1x=50-x 比较下列各题中两个数的大小（1）（1/2)^-0.1,(1/2)^0.1 (2)(3/5)^-2/5 ,(3/5)^-3/5(3) 5^3.1,3^3.1 (4)0.3^-1/5,0.3^-1/3 (4/3除以3-0.1）除以（1+3/2() 0.2分之x-3-0.1分之x+4=5 (-4)×(-2.5)×0.1×(-7)×(-5分之3)= -3/4(-m-n)^6+0.1[-(m+n)^2]^3 2x+2.4*3=(2+0.1x)*4