(1/2-1/3-1/4+1/12)*(-24) (-5/6)*(1又1/3)/(-1又2/3) (1/2-1/3)/(
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(1/2-1/3-1/4+1/12)*(-24) (-5/6)*(1又1/3)/(-1又2/3) (1/2-1/3)/(-2/3)*1/3 ,
(1/2-1/3-1/4+1/12)*(-24) (用分配率)
=-24×1/2+24×1/3+24×1/4-24×1/12
=-12+8+6-2
=0
第二个和第三个,把带分数变成分数就可以了
(-5/6)*(1又1/3)/(-1又2/3)
=-5/6×4/3÷(-5/3)
=5/6×4/3×3/5
=2/3
(1/2-1/3)/(-2/3)*1/3
=(1/2-1/3)×(-3/2)*1/3
=-1/2×(1/2-1/3)
=-1/2×1/6
=-1/12
=-24×1/2+24×1/3+24×1/4-24×1/12
=-12+8+6-2
=0
第二个和第三个,把带分数变成分数就可以了
(-5/6)*(1又1/3)/(-1又2/3)
=-5/6×4/3÷(-5/3)
=5/6×4/3×3/5
=2/3
(1/2-1/3)/(-2/3)*1/3
=(1/2-1/3)×(-3/2)*1/3
=-1/2×(1/2-1/3)
=-1/2×1/6
=-1/12
-5又1/3+2又11/12-16又1/4-3又5/6
计算3又3/4-8又1/6-(2又1/2)-1又5/6.
(-2000又5/6)+(-1999又2/3)-(-4000又3/4)-(+1又1/2)
-2006又5/6+(-1999又2/3)+4000又3/4+(-1又1/2)
(12又4分之1-9又6分之5+2又3分之2×2又4分之3)÷1又8分之5
(-1000又2/3)+(-999又5/6)+2000又3/4+(-1又1/2)
找规律填空 1又1/4、3又2/9、5又3/16、7又5/25、9又8/36、11又13/49、( )
0.75+(-2又3/4)+(+0.125)+(-12又5/7)+(-4又1/8)
3又(1/3) +5又(2/4) +7又(3/5) +9又(4/6) 分之 1又(2/3)+ 2又(3/4)+ 3又(4
1又1/2+2又1/6+3又1/12+4又1/20+5又1/30+6又1/42+7又1/56+8又1/72+9又1/90
1又2\1+2又6\1+3又12\1+4又20\1+...+20又420\1
1又1/2-2又5/6+3又1/12-4又19/20+5又1/30-6又41/42+7又1/56-8又71/72+9又1