1樓:珏玉不知
(-2又3/4)-(-1又1/2)
=-11/4+3/2
=-5/4
( 2/7) (-4/9)-( 5/9)-( 1)=-8/63-14/9
=-106/63
(-5/12)*8/15*1/2*(-2/3)=(-5*8*1*(-2))/(12*15*2*3)=2/27
(-1)*(-5/4))*8/15*3/2*(-2/3)*0*(-1)=0
2樓:匿名使用者
(-2又
制3/4)-(-1又1/2) (2/7)(-4/9)-(5/9)-(1) (-5/12)*8/15*1/2*(-2/3) (-1)*(-5/4)*8/15*3/2*(-2/3)*0*(-1)
=-2又3/4-1又2/4 = 2/7-4/9-5/9-1 =(-2/9)*1/2*(-2/3) =0
=-4又1/4 =8/63-14/9 =2/27 (因為
bai0乘任
du何數zhi都dao
得0)=-106/63
3樓:匿名使用者
(1).原式抄
襲=(-11/4)+(3/2)=(6/4)-(11/4)=-5/4=-1又
1/4(2).原式=(-8/63)-(5/9)-1=(-8/63)-(35/63)-(63/63)=-(8+35+63)/53=-106/63=-1又43/63
(3).原式=-2/(3*3*3)=-2/27,(約分可得)(4).原式=0,任何數乘以0均為0
計算:(1-1/2)*(2-2/3)*(3-3/4)*(4-4/5)*(5-5/6)*(6-6/7)*(7-7/8)*(8-8/9)*(9-9/10)
4樓:匿名使用者
可以化成
1/2 * (2*2)/3 * (3*3)/4....
依此類推
最後就是1*2*3*4*...*8*9/10即為9!/10
5樓:時不在我
(du1-1/2)
zhi*(dao2-2/3)*(3-3/4)*(4-4/5)*(5-5/6)*(6-6/7)*(7-7/8)*(8-8/9)*(9-9/10)
=3*4*6*7*8*9=36288
6樓:匡威外貿
9!=362880 除以10等於362880
計算題10題:(1)-8又3/4-5又7/9+4又1/6-3又2/9 懸賞30分
7樓:新野旁觀者
計算題10題:
(1)-8又3/4-5又7/9+4又1/6-3又2/9
=(-8又3/4+4又1/6)-(5又7/9+3又2/9)
=-4又7/12-9
=-13又7/12
(2)-5.75-[-3又3/4+(-5又1/8)]-3.125
=(-5.75+3又3/4)+(5又1/8-3.125)
=-2+2
=0(3)(-1又1/2)-[(1又1/4)-(-2又1/2)-(-3又3/4)]-(-1又1/4)+4
=(-1又1/2-2又1/2)+(-1又1/4+1又1/4)+(-3又3/4+4)
=-4+0+1/4
=-3又3/4
(3)(-4又7/8)-(-5又1/2)+(-4又1/4)-(-3又1/8)
=(-4又7/8+3又1/8)-4又1/4+5又1/2
=-1又3/4-4又1/4+5又1/2
=-6+5又1/2
=-1/2
(4)(-2013又5/6)-(-2012又2/3)-(-2011又3/4)-(+2010又1/2)
=(-2013+2012+2011-2010)+(-5/6+2/3+3/4-1/2)
=0+1/12
=1/12
(5)|-2又1/4|-(-3/4)+1-|1-1/2|
=2又1/4+3/4+1-1/2
=3+1-1/2
=3又1/2
(6)|-2又1/2|+(-3.7)+|-(+2.7)| - |-(7又1/2)|
=(2又1/2-7又1/2)+(-3.7-2.7)
=-5-6
=-11
(7)|+2+5/13|-|-37/10|+(-18/13)+0.13
=(2又5/13-18/13)+(-37/10+0.13)
=1-3.57
=-4.57
(8)|-9/41|-|-13/14|+|9/41-13/14|
=(9/41-9/41)+(-13/14+13/14)
=0+0
=0(9)|1/2001-1/2000|+|1/2002-1/2001|-|1/2002-1/2000|
=1/2000-1/2001+1/2001-1/2002-1/2000+1/2002
=0(10)1/2-[3/4-(1/4-5-1/2)]
=1/2-[3/4-5又1/4]
=1/2-4又1/2=-4
【1.45+(6又3/4-1又2/7×4.2)】÷1又1/3 計算
計算:1/3+3+1又1/2 11又1/4÷ (1-1/2-1/4) 23-3又8/9 ÷3/8×2又1/7
8樓:新野旁觀者
1/3+3+1又1/2
=4+(
1/3+1/2)
=4+5/6
=4又5/6
11又1/4÷ (1-1/2-1/4)
=11又1/4÷1/4
=11×4+1/4×4
=44+1
=4523-3又8/9 ÷3/8×2又1/7=23-35/9×8/3×15/7
=23-200/9
=7/9
(4/5-1/3)÷8/9
=7/12×9/8
=21/32
5-3又/1/3×6/25-3又1/5
=5-10/3×6/25-3又1/5
=5-(4/5+3又1/5)
=5-4
=11/2×[10-(2又3/20-3/5)]=1/2×[10-1.55]
=1/2×8.45
=4.225
2.5÷1/2-1又1/5×0.5
=5-0.6
=4.4
(9.3×5/6-7.3)÷2又1/4
=(7.75-7.3)÷9/4
=0.45×4/9
=0.2
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