1.(5.75-4.75)/[2.5+(0.75*1.25*8) 2.(6.9*3.6*3.5)/(1.25/0.25) 3.15.37*7.89-9.37*7.89+15.37*2.11-9.37*2.11-9.37*2.11 4.10-9.8+9.6-9.4+9.2-9.+0.8-0.6+0.4-0.2 5.2000+1999-1998-1997+1996+1995-1994-1993+.+4+4-2-1 6.(44332-443.32)/(88664-8

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1.(5.75-4.75)/[2.5+(0.75*1.25*8)2.(6.9*3.6*3.5)/(1.25/0.25)3.15.37*7.89-9.37*7.89+15.37*2.11-9.37*2.

1.(5.75-4.75)/[2.5+(0.75*1.25*8) 2.(6.9*3.6*3.5)/(1.25/0.25) 3.15.37*7.89-9.37*7.89+15.37*2.11-9.37*2.11-9.37*2.11 4.10-9.8+9.6-9.4+9.2-9.+0.8-0.6+0.4-0.2 5.2000+1999-1998-1997+1996+1995-1994-1993+.+4+4-2-1 6.(44332-443.32)/(88664-8
1.(5.75-4.75)/[2.5+(0.75*1.25*8) 2.(6.9*3.6*3.5)/(1.25/0.25) 3.15.37*7.89-9.37*7.89+15.37*2.11-9.37*2.11-9.37*2.11 4.10-9.8+9.6-9.4+9.2-9.+0.8-0.6+0.4-0.2 5.2000+1999-1998-1997+1996+1995-1994-1993+.+4+4-2-1 6.(44332-443.32)/(88664-886.64) 7.(2+4)+(2+4*2)+(2+4*3).(2+4*100) 8.1/(2/3)/(3/4)./(99/100) 9.

1.(5.75-4.75)/[2.5+(0.75*1.25*8) 2.(6.9*3.6*3.5)/(1.25/0.25) 3.15.37*7.89-9.37*7.89+15.37*2.11-9.37*2.11-9.37*2.11 4.10-9.8+9.6-9.4+9.2-9.+0.8-0.6+0.4-0.2 5.2000+1999-1998-1997+1996+1995-1994-1993+.+4+4-2-1 6.(44332-443.32)/(88664-8
1、.(5.75-4.75)/[2.5+(0.75*1.25*8)
=4/[2.5+(0.75*10)]
=4/(2.5+7.5)
=4/10
=0.4
2、(6.9*3.6*3.5)/(1.25/0.25)
=86.94/5
=17.388
3、15.37*7.89-9.37*7.89+15.37*2.11-9.37*2.11-9.37*2.11
= 15.37*7.89+15.37*2.11-9.37*7.89-9.37*2.11-9.37*2.11
=(7.89+2.11)*15.37-9.37*7.89-9.37*2.11-9.37*2.11
=153.7-(9.37*7.89+9.37*2.11+9.37*2.11)
= 153.7-(7.89+2.11+2.11)*9.37
=153.7-113.4707
=40.2293
4\10-9.8+9.6-9.4+9.2-9.+0.8-0.6+0.4-0.2
= 10-10/0.2*0.2
=10-10
=0
你应该自己学会一种计算方法,

1、 (5.75-4.75)/[2.5+(0.75*1.25*8)
=4/[2.5+(0.75*10)]
=4/(2.5+7.5)
=4/10
=0.4
2、 (6.9*3.6*3.5)/(1.25/0.25)
=86.94/5
=17.388
3、 15.37*7...

全部展开

1、 (5.75-4.75)/[2.5+(0.75*1.25*8)
=4/[2.5+(0.75*10)]
=4/(2.5+7.5)
=4/10
=0.4
2、 (6.9*3.6*3.5)/(1.25/0.25)
=86.94/5
=17.388
3、 15.37*7.89-9.37*7.89+15.37*2.11-9.37*2.11-9.37*2.11
= 15.37*7.89+15.37*2.11-9.37*7.89-9.37*2.11-9.37*2.11
=(7.89+2.11)*15.37-9.37*7.89-9.37*2.11-9.37*2.11
=153.7-(9.37*7.89+9.37*2.11+9.37*2.11)
= 153.7-(7.89+2.11+2.11)*9.37
=153.7-113.4707
=40.2293
4、10-9.8+9.6-9.4+9.2-9....................+0.8-0.6+0.4-0.2
= 10-10/0.2*0.2
=10-10
=0
5、 2000+1999-1998-1997+1996+1995-1994-1993+.................+4+4-2-1
=(2000+1999-1998-1997)+(1996+1995-1994-1993)+.................+(4+3-2-1)
=2x500
=1000
6、 (44332-443.32)/(88664-886.64)
=(1/2)x(44332-443.32)/(44332-443.32)
=1/2
7、 (2+4)+(2+4*2)+(2+4*3)..............(2+4*100)
=2x100+4x(1+2+3+4+-------+99+100)
=200+4x5050
=200+20200
=20400
8、 1/(2/3)/(3/4)...../(99/100)
=1x(3/2)x(4/3).....x(100/99)
=100/2
=50
敲了这么久的字一定要采纳我的哈!有什么疑问请回复

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1

这么简单,你笨啊,没难度的,要我QQ教你? -.-
但一题5分 可以的话- - 你发QQ给我 ,