1樓:閭朋
①|-13|+|-53|+(-21)+|-3.5+3.5|
=13+53-21+0
=66-21
=45②(-3又4分之1)+(+3又3分之2)+(+2又4分之1)+(-1又3分之2)
=-3又4分之1+3又3分之2+2又4分之1-1又3分之2
=-3又4分之1+2又4分之1+3又3分之2-1又3分之2
=-1+2
=1 ③(-1×1/2)+(-1/2×1/3)+(-1/3×1/4)+......+(-1/2007×1/2008)
=(-1)[(1-1/2)(1/2-1/3)(1/3-1/4)+...+(1/2007-1/2008)]
=(-1)(1-1/2008)
=-2007/2008
④(-7.33)×(+42.07)+(-2.07)(-7.33)
=(-7.33)×(42.07-2.07)
=(-7.33)×40
=-293.2
⑤若設x=(-1/1996)^2005×1996^2006,y=(-5)^2005×(-6)^2005×(-1/30)^2004-34,求(x+y)^4的值,並用科學計數法表示結果 。
x=(-1/1996)^2005×1996^2006=(-1)^2005*1996^2006/1996^2005=-1996
y=(-5)^2005×(-6)^2005×(-1/30)^2004-34
=[(-5)*(-6)]^2005*(-1)^2004/30^2004-34
=30-34
=-4(x+y)^4=(-1996-4)^4=(-2000)^4=16×10^12 =1.6×10^13
夠多了,分給我吧。求.........
2樓:戀戰の帥
上面乙個也是我回答的,忘登陸了。我編了64道,到最後來不及寫答案了,sorry。
3+2^2×(-1/5)
解:原式=3+4×(-1/5)
=3-4/5
=11/5
18-6÷(-2)×(-1/3)
解:原式=18-(-3)×(-1/3)
=18-1
=17(-3)^2×[-2/3+(-5/9)]解:原式=9×(-11/9)
=-11
8+(-3)^2×(-2)
解:原式=8+9×(-2)
=8-18
=-10
100÷(-2)^2-(-2)÷(-2/3)解:原式=100÷4-3
=25-3
=2236×(1/2-1/3)^2
解:原式=36×(1/6)^2
=36×(1/36)
=112.7÷(-8/19)×0
解:原式=0
4×(-3)^2+6
解:原式=4×9+6
=36+6
=42(-3/4)×(-8+2/3-1/3)解:原式=(-3/4)×(-8+1/3)
=(-3/4)×(-23/3)
=23/4
(-2)^3-13÷(-1/2)
解:原式=(-8)-(-26)
=180-2^3÷(-4)^3-1/8
解:原式=0-8÷(-64)-1/8
=0+1/8-1/8
=0(-2)^3×0.5-(-1.6)^2÷(-2)^2解:原式=(-8)×(1/2)-(-8/5)^2÷4=(-4)-(64/25)÷4
=(-4)-16/25
=-116/25
(-3/2)×[(-2/3)^2-2]
解:原式=(-3/2)×(4/9-2)
=(-3/2)×(-14/9)
=7/3
[(-3)^2-(-5)^2]÷(-2)
解:原式=(9-25)÷(-2)
=(-16)÷(-2)
=816÷(-2)^3-(-1/8)×(-4)解:原式=16÷(-8)-1/2
=-2-1/2
=-5/2
39+[-23]+0+[-16]= 0
[-18]+29+[-52]+60= 19[-3]+[-2]+[-1]+0+1+2= -3[-301]+125+301+[-75]= 50[-1]+[-1/2]+3/4+[-1/4]= -1[-7/2]+5/6+[-0.5]+4/5+19/6= 1.25[-26.
54]+[-6.14]+18.54+6.
14= -81.125+[-17/5]+[-1/8]+[-0.6]= -323+(-73)
(-84)+(-49)
7+(-2.04)
4.23+(-7.57)
(-7/3)+(-7/6)
9/4+(-3/2)
3.75+(2.25)+5/4
-3.75+(+5/4)+(-1.5)
(-4)(+6)(-7)
(-27)(-25)(-3)(-4)
0.001*(-0.1)*(1.1)
24*(-5/4)*(-12/15)*(-0.12)(-3/2)(-4/3)(-5/4)(-6/5)(-7/6)(-8/7)
(-24/7)(11/8+7/3-3.75)*24(-78)+25+26+27
(-3)+(-2)+(-1)
39+28+26-125
[2/3-4-1/4+(-0.4)]+1/3+222+(-4)+(-2)+4-3
(-2)+7-(-16)-(-3)
(-5)-(+3)+(-9)-(-7)
(-1/4)+(-5/6)-(-1/3)+2/3-1/62/3+(-1/2)-(-1/3)+1/4(-5)+(-8)-(-2)-3
(-21)+(+16)-(-13)-(+7)+(-6)(-2/3)+(-1/3)+3/4+(-1/4)(-0.73)+(-0.62)-(+0.
75)(-19)+(-11)-(-33)+27
(-6.4)+(-3.6)-(-12.5)+4.5(-81)+(-19)-27+33
(-3.2)-(-6.2)+(-5.1)+(-4.9)(-6.9)+(-3.1)+(+2.7)+(-2.1)5+21+8/2-6-59
68/21-8-11-8+61
-2/9-7/9-56
4.6-(-3/4+1.6-4-3/4)
[2/3-4-1/4+(-0.4)]/1/3+222+(-4)+(-2)+4-3
-2+8-8-1/2+8/1/8
(2/3+1/2)/(-1/12)+(-12)2/(-2)+0/7-(-8)-(-2)
(1/4-5/6+1/3+2/3)/1/2
3樓:匿名使用者
3+2^2×(-1/5)
解:原式=3+4×(-1/5)
=3-4/5
=11/5
18-6÷(-2)×(-1/3)
解:原式=18-(-3)×(-1/3)
=18-1
=17(-3)^2×[-2/3+(-5/9)]解:原式=9×(-11/9)
=-11
8+(-3)^2×(-2)
解:原式=8+9×(-2)
=8-18
=-10
100÷(-2)^2-(-2)÷(-2/3)解:原式=100÷4-3
=25-3
=2236×(1/2-1/3)^2
解:原式=36×(1/6)^2
=36×(1/36)
=112.7÷(-8/19)×0
解:原式=0
4×(-3)^2+6
解:原式=4×9+6
=36+6
=42(-3/4)×(-8+2/3-1/3)解:原式=(-3/4)×(-8+1/3)
=(-3/4)×(-23/3)
=23/4
(-2)^3-13÷(-1/2)
解:原式=(-8)-(-26)
=180-2^3÷(-4)^3-1/8
解:原式=0-8÷(-64)-1/8
=0+1/8-1/8
=0(-2)^3×0.5-(-1.6)^2÷(-2)^2解:原式=(-8)×(1/2)-(-8/5)^2÷4=(-4)-(64/25)÷4
=(-4)-16/25
=-116/25
(-3/2)×[(-2/3)^2-2]
解:原式=(-3/2)×(4/9-2)
=(-3/2)×(-14/9)
=7/3
[(-3)^2-(-5)^2]÷(-2)
解:原式=(9-25)÷(-2)
=(-16)÷(-2)
=816÷(-2)^3-(-1/8)×(-4)解:原式=16÷(-8)-1/2
=-2-1/2
=-5/2
4樓:軍隊中尉
39+[-23]+0+[-16]= 0
[-18]+29+[-52]+60= 19[-3]+[-2]+[-1]+0+1+2= -3[-301]+125+301+[-75]= 50[-1]+[-1/2]+3/4+[-1/4]= -1[-7/2]+5/6+[-0.5]+4/5+19/6= 1.25[-26.
54]+[-6.14]+18.54+6.
14= -81.125+[-17/5]+[-1/8]+[-0.6]= -323+(-73)
(-84)+(-49)
7+(-2.04)
4.23+(-7.57)
(-7/3)+(-7/6)
9/4+(-3/2)
3.75+(2.25)+5/4
-3.75+(+5/4)+(-1.5)
(-4)(+6)(-7)
(-27)(-25)(-3)(-4)
0.001*(-0.1)*(1.1)
24*(-5/4)*(-12/15)*(-0.12)(-3/2)(-4/3)(-5/4)(-6/5)(-7/6)(-8/7)
(-24/7)(11/8+7/3-3.75)*24(-78)+25+26+27
(-3)+(-2)+(-1)
39+28+26-125
[2/3-4-1/4+(-0.4)]+1/3+222+(-4)+(-2)+4-3
(-2)+7-(-16)-(-3)
(-5)-(+3)+(-9)-(-7)
(-1/4)+(-5/6)-(-1/3)+2/3-1/62/3+(-1/2)-(-1/3)+1/4(-5)+(-8)-(-2)-3
(-21)+(+16)-(-13)-(+7)+(-6)(-2/3)+(-1/3)+3/4+(-1/4)(-0.73)+(-0.62)-(+0.
75)(-19)+(-11)-(-33)+27
(-6.4)+(-3.6)-(-12.5)+4.5(-81)+(-19)-27+33
(-3.2)-(-6.2)+(-5.1)+(-4.9)(-6.9)+(-3.1)+(+2.7)+(-2.1)5+21+8/2-6-59
68/21-8-11-8+61
-2/9-7/9-56
4.6-(-3/4+1.6-4-3/4)
[2/3-4-1/4+(-0.4)]/1/3+222+(-4)+(-2)+4-3
-2+8-8-1/2+8/1/8
(2/3+1/2)/(-1/12)+(-12)2/(-2)+0/7-(-8)-(-2)
(1/4-5/6+1/3+2/3)/1/2
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