计算题10题:(1)-8又3/4-5又7/9+4又1/6-3又2/9

1个回答

  • 计算题10题:

    (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