1(+8)+(-10)+(-2)+(+1)
来源:学生作业帮 编辑:大师作文网作业帮 分类:综合作业 时间:2024/10/01 15:35:19
1(+8)+(-10)+(-2)+(+1)
2(-5)+(+6)+(-3)+(-9)+(+4)+(+7)
3(+0.65)+(-1.9)+(-0.1)+(+0.65)
4(+1/2)+(-2/3)+(+4/5)+(-1/2)+(-1/3)
5(-10/3)+(+15.5)+(-50/3)+(-5.5)
6(+1/16)+(-3.5)+(-2.5)+(+15/16)
7(+1)+(-21/2)+(-83/37)+(-9.5)
8(+0.5)+(13/4)+(-2.75)+(+11/2)
2(-5)+(+6)+(-3)+(-9)+(+4)+(+7)
3(+0.65)+(-1.9)+(-0.1)+(+0.65)
4(+1/2)+(-2/3)+(+4/5)+(-1/2)+(-1/3)
5(-10/3)+(+15.5)+(-50/3)+(-5.5)
6(+1/16)+(-3.5)+(-2.5)+(+15/16)
7(+1)+(-21/2)+(-83/37)+(-9.5)
8(+0.5)+(13/4)+(-2.75)+(+11/2)
楼上后面两题都做错了
1(+8)+(-10)+(-2)+(+1)
=(8+1)-(10+2)
=9-12
=-3
2(-5)+(+6)+(-3)+(-9)+(+4)+(+7)
=(6+4+7)-(5+3+9)
=17-17
=0
3(+0.65)+(-1.9)+(-0.1)+(+0.65)
=0.65-1.9-0.1+0.65
=(0.65+0.65)-(1.9+0.1)
=1.3-2
=-0.7
4(+1/2)+(-2/3)+(+4/5)+(-1/2)+(-1/3)
=(1/2-1/2)+(4/5)-(2/3+1/3)
=0+4/5-1
=-1/5
5(-10/3)+(+15.5)+(-50/3)+(-5.5)
=(-10/3-50/3)+15.5-5.5
=-60/3+10
=-20+10
=-10
6(+1/16)+(-3.5)+(-2.5)+(+15/16)
=(1/16+15/16)-(3.5+2.5)
=1-6
=-5
7(+1)+(-21/2)+(-83/37)+(-9.5)
=1-(21/2+9.5)+(-83/37)
=1-(20)-83/37
=-19-2又9/37
=-21又9/37
8(+0.5)+(13/4)+(-2.75)+(+11/2)
=(0.5+11/2)+(13/4-2.75)
=6+0.5
=6.5
1(+8)+(-10)+(-2)+(+1)
=(8+1)-(10+2)
=9-12
=-3
2(-5)+(+6)+(-3)+(-9)+(+4)+(+7)
=(6+4+7)-(5+3+9)
=17-17
=0
3(+0.65)+(-1.9)+(-0.1)+(+0.65)
=0.65-1.9-0.1+0.65
=(0.65+0.65)-(1.9+0.1)
=1.3-2
=-0.7
4(+1/2)+(-2/3)+(+4/5)+(-1/2)+(-1/3)
=(1/2-1/2)+(4/5)-(2/3+1/3)
=0+4/5-1
=-1/5
5(-10/3)+(+15.5)+(-50/3)+(-5.5)
=(-10/3-50/3)+15.5-5.5
=-60/3+10
=-20+10
=-10
6(+1/16)+(-3.5)+(-2.5)+(+15/16)
=(1/16+15/16)-(3.5+2.5)
=1-6
=-5
7(+1)+(-21/2)+(-83/37)+(-9.5)
=1-(21/2+9.5)+(-83/37)
=1-(20)-83/37
=-19-2又9/37
=-21又9/37
8(+0.5)+(13/4)+(-2.75)+(+11/2)
=(0.5+11/2)+(13/4-2.75)
=6+0.5
=6.5
1(+8)+(-10)+(-2)+(+1)
(-8)+10+2+(-1)
第一、(-7)-(-10)+(-8)-(+2) 第二、1+(-1又1/2)-(-1
7'8'9'10'(1)(2)(3)
10,1,8,1,6,2,4,6,2,().
1、 3+(-11)-(-9) 2、-10-8÷除(-2)×(-1/2)
化简(6+(1/2)π)*3+10*(1+(1/8)π)
1/(1*3)+1/(2*4)+1/(3*5)+1/(4*6)+...+1/(8*10)=?
计算(1/10*1/9*1/8*...*1/2*1)^10*(10*9*8*7*6*5*4*3*2*1)^10
(10-2x)(8-x)=10×8×(1-30%),
(10分之1×9分之1×8分之1×…2分之1×10)的 10次方×(10×9×8×…2×10)的 10次方
(7).(8).(9).(10)选择题(1).(2)求解,