有理数加减混合运算10题有答案的

显示全部楼层 · 2009-10-13 13:19:38

(1)(-9)-(-13)+(-20)+(-2)(2)3+13-(-7)/6(3)(-2)-8-14-13(4)(-7)*(-1)/7+8(5)(-11)*4-(-18)/18(6)4+(-11)-1/(-3)(7)(-17)-6-16/(-18)(8)5/7+(-1)-(-8)(9)(-1)*(-1)+15+1(10)3-(-5)*3/(-15)(11)6*(-14)-(-14)+(-13)(12)(-15)*(-13)-(-17)-(-4)(13)(-20)/13/(-7)+11(14)8+(-1)/7+(-4)(15)(-13)-(-9)*16*(-12)(16)(-1)+4*19+(-2)(17)(-17)*(-9)-20+(-6)(18)(-5)/12-(-16)*(-15)(19)(-3)-13*(-5)*13(20)5+(-7)+17-10(21)(-10)-(-16)-13*(-16)(22)(-14)+4-19-12(23)5*13/14/(-10)(24)3*1*17/(-10)(25)6+(-12)+15-(-15)(26)15/9/13+(-7)(27)2/(-10)*1-(-8)(28)11/(-19)+(-14)-5(29)19-16+18/(-11)(30)(-1)/19+(-5)+1(31)(-5)+19/10*(-5)(32)11/(-17)*(-13)*12(33)(-8)+(-10)/8*17(34)7-(-12)/(-1)+(-12)(35)12+12-19+20(36)(-13)*(-11)*20+(-4)(37)17/(-2)-2*(-19)(38)1-12*(-16)+(-9)(39)13*(-14)-15/20(40)(-15)*(-13)-6/(-9)(41)15*(-1)/12+7(42)(-13)+(-16)+(-14)-(-6)(43)14*12*(-20)*(-13)(44)17-9-20+(-10)(45)12/(-14)+(-14)+(-2)(46)(-15)-12/(-17)-(-3)(47)6-3/9/(-8)(48)(-20)*(-15)*10*(-4)(49)7/(-2)*(-3)/(-14)(50)13/2*18*(-7)答案：1 -182 103/63 -374 95 -436 -(20/3)7 -(199/9)8 54/79 1710 211 -8312 21613 1021/9114 27/715 -174116 7317 12718 -(2885/12)19 84220 521 21422 -4123 -(13/28)24 -(51/10)25 2426 -(268/39)27 39/528 -(372/19)29 15/1130 -(77/19)31 -(29/2)32 1716/1733 -(117/4)34 -1735 2536 285637 59/238 18439 -(731/4)40 587/341 23/442 -3743 4368044 -2245 -(118/7)46 -(192/17)47 145/2448 -1200049 -(3/4)50 -819

千问 · 2009-10-13 13:19:38

1)-5-9+3=-14+3=-11(2)10-17+8=-7+8=1(3)-3-4+19-11=-7+19-11=1(4)-8+12-16-23=4-16-23=-12-23=-35(5)-4.2+5.7-8.4+10=1.5-8.4+10=-6.9+10=3.1(6)6.1-3.7-4.9+1.8=2.4-4.9+1.8=-2.5+1.8=-0.7(7)1/3-2/3+1=-1/3+1=2/3(8)-1/4+5/6+2/3-1/2=7/12+8/12-6/12=15/12-6/12=3/4(9)(-36)-(-25)-(+36)+(+72)=-36+25-36+72=25(10)(-8)-(-3)+(+5)-(+9)=-8+3+5-9=-9(11)-1/2+(-1/6)-(-1/4)-(+2/3)=-6/12-2/12+3/12-8/12=-13/12(12)-9+(-3|3/4)-3|3/4=-9-3|3/4-3|3/4=-12|3/4-3|3/4=-16|1/2(13)12-(-18)+(-7)-15=12+18-7-15=8(14)-40-28-(-19)+(-24)-(-32)=-40-28+19-24+32=-41