1樓：匿名使用者
(-15.5)+(-33.2)-(-42.
5)-(+24.8)=-15.5-33.
2+42.5-24.8=-48.
7+42.5-24.8
=-6.2-24.8
=-31
-1/2-6又1/5-1+4又1/5-4.5+3又1/3=-15/30-186/30-30/30+126/30-135/30+100/30
=(-15-186-30+126-135+100)/30=-140/30
=-14/3
0-(-1/2)-(-1/3)-(-1/4)-(+1/5)=1/2+1/3+1/4-1/5
=30/60+20/60+15/60-12/60=(30+20+15-12)/60
=53/60
|-0.5|-[|(-2)-(+9)|-|-7-5+12|]=0.5-[|-2-9|-0]
=0.5-11
=-10.5
(-15)-(-5)-(+5)-(-10)=-15+5-5+10
=-5(-1/3)-(-1/2)-(-1/6)-(-1又2/3)=-1/3+1/2+1/6+1又2/3
=-2/6+3/6+1/6+10/6
=(-2+3+1+10)/6=2
2樓：匿名使用者
(1) 原式=-15.5-33.2+42.5-24.8=-31(2) 原式=-0.5-6.2-1+4.2-4.5+3又3/1=-11/3
(3) 原式=1/2+1/3+1/4-1/5=53/60(4) 原式=0.5-7=6.5
(5) 原式=-15+5-5+10=-5
(6) 原式=-1/3+1/2+1/6+5/3=8/3
3樓：花弄月影銀
解:1.原式=-15.5-33.2+42.5-24.8=-48.7+42.5-24.8
=-6.2-24.8
=-31
2.原式=-15/30-186/30-30/30+126/30-135/30+100/30
=(-15-186-30+126-135+100)/30=-140/30
=-14/3
3.原式 =1/2+1/3+1/4-1/5=30/60+20/60+15/60-12/60=(30+20+15-12)/60
=53/60
4.原式=0.5-[|-2-9|-0]
=0.5-11
=-10.5
5.原式=-15+5-5+10
=-56.原式=-1/3+1/2+1/6+1又2/3=-2/6+3/6+1/6+10/6
=(-2+3+1+10)/6=2
4樓：
1，解：=(42.5-15.5)-(33.2+24.8)=27-58
=-31
2，解：=-1/2 - 31/5 - 1 + 21/5 - 9/2 + 10/3
=-(1/2+9/2)+(21/5-31/5)-1+10/3=-5-2-1+10/3
=-8+10/3
=-24/3+10/3
=-14/3
3，解：=1/2+1/3+1/4-1/5
=30/60+20/60+15/60-12/60=53/60
4，解：=1/2-(11-0)
=1/2-22/2
=-21/2
5，解：=-15+5-5+10
=-56，解：=-2/6+3/6+1/6+10/6=12/6=2
5樓：檢文彥
(1)=-15.5-33.2+42.5-24.8=-31
(2)=-1/2-31/5-1+21/5-9/2+10/3=(-1/2-9/2)-(31/5-21/5)+(10/3-1)=-5-2+7/3
=-9又1/3
(3)=0+1/2+1/3+1/4-1/5=53/60
(4)=0.5-[11-0]
=0.5-11
=-10.5
(5)=-15+5-5+10
=-5(6)=-1/3+1/2+1/6+1又2/3=-2/6+3/6+1/6+10/6
=2好長時間沒做這種題了··
有些忘～
不知道對不對哈！
6樓：錦·上·花
1>(-15.5)+(-33.2)-(-42.
5)-(+24.8)=-15.5-33.
2+42.5-24.8=-15.
5+42.5-33.2-24.
8=27-58
=-31
4>|-0.5|-[|(-2)-(+9)|-|-7-5+12|]=0.5-[|-2-9|-|-7-5+12]=0.5-11+0
=-10.5
5>(-15)-(-5)-(+5)-(-10)=-15+5-5+10=25
7樓：δ蕾朵
(-15.5)+(-33.2)-(-42.
5)-(+24.8)=-15.5-33.
2+42.5-24.8=-48.
7+42.5-24.8
=-6.2-24.8
=-31
-1/2-6又1/5-1+4又1/5-4.5+3又1/3=-15/30-186/30-30/30+126/30-135/30+100/30
=(-15-186-30+126-135+100)/30=-140/30
=-14/3
0-(-1/2)-(-1/3)-(-1/4)-(+1/5)=1/2+1/3+1/4-1/5
=30/60+20/60+15/60-12/60=(30+20+15-12)/60
=53/60
|-0.5|-[|(-2)-(+9)|-|-7-5+12|]=0.5-[|-2-9|-0]
=0.5-11
=-10.5
(-15)-(-5)-(+5)-(-10)=-15+5-5+10
=-5(-1/3)-(-1/2)-(-1/6)-(-1又2/3)=-1/3+1/2+1/6+1又2/3
=-2/6+3/6+1/6+10/6
=(-2+3+1+10)/6
=2建議你自己做（僅供參考）
8樓：匿名使用者
(-15.5)+(-33.2)-(-42.
5)-(+24.8)=-15.5-33.
2+42.5-24.8=-48.
7+42.5-24.8
=-6.2-24.8
=-31
-1/2-6又1/5-1+4又1/5-4.5+3又1/3=-15/30-186/30-30/30+126/30-135/30+100/30
=(-15-186-30+126-135+100)/30=-140/30
=-14/3
0-(-1/2)-(-1/3)-(-1/4)-(+1/5)=1/2+1/3+1/4-1/5
=30/60+20/60+15/60-12/60=(30+20+15-12)/60
=53/60
|-0.5|-[|(-2)-(+9)|-|-7-5+12|]=0.5-[|-2-9|-0]
=0.5-11
=-10.5
(-15)-(-5)-(+5)-(-10)=-15+5-5+10
=-5(-1/3)-(-1/2)-(-1/6)-(-1又2/3)=-1/3+1/2+1/6+1又2/3
=-2/6+3/6+1/6+10/6
=(-2+3+1+10)/6
=2 回答者： dinga8002 - 試用期 一級 9-15 12:37
1>(-15.5)+(-33.2)-(-42.
5)-(+24.8)=-15.5-33.
2+42.5-24.8=-15.
5+42.5-33.2-24.
8=27-58
=-31
4>|-0.5|-[|(-2)-(+9)|-|-7-5+12|]=0.5-[|-2-9|-|-7-5+12]=0.5-11+0
=-10.5
5>(-15)-(-5)-(+5)-(-10)=-15+5-5+10=25
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