数学计算,要正确

来源:百度知道 编辑:UC知道 时间:2024/05/28 18:22:24
[2.4-(-2.7+3.5)-2.2]-(-6.7+5.4)
-2^2*8*(-2.5)*(-125)
13又1/8/(-7)*(-2)^3
1又1/6*(1/6-1/3)*3/14
20/(-4)*5+5*(-3)/15-7
(-2)^3/(1又1/3)^2+(-4又1/2)*(1/3)+125%

[2.4-(-2.7+3.5)-2.2]-(-6.7+5.4)
=(2.4-0.8-2.2)-(-1.3)
=-0.6+1.3
=0.7

-2^2*8*(-2.5)*(-125)
=-(4*2.5)*(8*125)
=-10*1000
=-10000

13又1/8/(-7)*(-2)^3
=(105/8)/(-7)*(-8)
=(105/7)*(8/8)
=15

1又1/6*(1/6-1/3)*3/14
=(7/6)*(-1/3)*(3/14)
=-1/12

20/(-4)*5+5*(-3)/15-7
=-25-1-7
=-33

(-2)^3/(1又1/3)^2+(-4又1/2)*(1/3)+125%
=(-8)/(16/9)-(9/2)*(1/3)+5/4
=-9/2-3/2+5/4
=-21/4

你不会用计算机啊,笨蛋。