5.61×9.9×0.38÷(0.19×3又3/10×1.1)3又3/4×2.84÷3又3/5÷(1又1/2×1.42)×1又4/51998÷1998又1998/1999﹢1/20001/9×(3.47÷5/18-3.6+7.53×3又3/5)1又4/19×(18又2/3-3/4)+20又1/12÷19/23
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![5.61×9.9×0.38÷(0.19×3又3/10×1.1)3又3/4×2.84÷3又3/5÷(1又1/2×1.42)×1又4/51998÷1998又1998/1999﹢1/20001/9×(3.47÷5/18-3.6+7.53×3又3/5)1又4/19×(18又2/3-3/4)+20又1/12÷19/23](/uploads/image/z/8669860-52-0.jpg?t=5.61%C3%979.9%C3%970.38%C3%B7%EF%BC%880.19%C3%973%E5%8F%883%2F10%C3%971.1%EF%BC%893%E5%8F%883%2F4%C3%972.84%C3%B73%E5%8F%883%2F5%C3%B7%281%E5%8F%881%2F2%C3%971.42%29%C3%971%E5%8F%884%2F51998%C3%B71998%E5%8F%881998%2F1999%EF%B9%A21%2F20001%2F9%C3%97%283.47%C3%B75%2F18%EF%BC%8D3.6%EF%BC%8B7.53%C3%973%E5%8F%883%2F5%291%E5%8F%884%2F19%C3%97%2818%E5%8F%882%2F3%EF%BC%8D3%2F4%EF%BC%89%EF%BC%8B20%E5%8F%881%2F12%C3%B719%2F23)
5.61×9.9×0.38÷(0.19×3又3/10×1.1)3又3/4×2.84÷3又3/5÷(1又1/2×1.42)×1又4/51998÷1998又1998/1999﹢1/20001/9×(3.47÷5/18-3.6+7.53×3又3/5)1又4/19×(18又2/3-3/4)+20又1/12÷19/23
5.61×9.9×0.38÷(0.19×3又3/10×1.1)
3又3/4×2.84÷3又3/5÷(1又1/2×1.42)×1又4/5
1998÷1998又1998/1999﹢1/2000
1/9×(3.47÷5/18-3.6+7.53×3又3/5)
1又4/19×(18又2/3-3/4)+20又1/12÷19/23
5.61×9.9×0.38÷(0.19×3又3/10×1.1)3又3/4×2.84÷3又3/5÷(1又1/2×1.42)×1又4/51998÷1998又1998/1999﹢1/20001/9×(3.47÷5/18-3.6+7.53×3又3/5)1又4/19×(18又2/3-3/4)+20又1/12÷19/23
5.61×9.9×0.38÷(0.19×3又3/10×1.1)=5.1×3×2= 30.6
3又3/4×2.84÷3又3/5÷(1又1/2×1.42)×1又4/5=2.5×2×0.5= 2.5
1998÷1998又1998/1999﹢1/2000=1998×1999×2000÷(1998×1999)= 2000
1/9×(3.47÷5/18-3.6+7.53×3又3/5)=1/9×36= 4
1又4/19×(18又2/3-3/4)+20又1/12÷19/23= 23/19×(18-1/12+20+1/12)=23/19×38= 46
你好: 98989898×99999999÷10101010÷11111111 =(98989898÷10101010)×(99999999÷11111111) =9.8×9 =88.2 12.9÷0.72+43.5÷3.6 =64.5÷3.6