5.61×9.9×0.38÷(0.19×3又3/10×1.1)

littlecat012022-10-04 11:39:542条回答

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

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布衣羊 共回答了12个问题 | 采纳率91.7%
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
1年前
薰衣草5460 共回答了33个问题 | 采纳率
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
1年前

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(3.15+2.17+5.61)×(2.17+5.61+6.6)-(3.15+2.17+
(3.15+2.17+5.61)×(2.17+5.61+6.6)-(3.15+2.17+
(3.15+2.17+5.61)×(2.17+5.61+6.6)-(3.15+2.17+5.61+6.6)×(2.17+5.6)
奈何桥渡1年前1
颤抖的十指 共回答了15个问题 | 采纳率100%
令3.15+2.17+5.61=x
令2.17+5.61=y
所以原式变成
x(y+6.6)-(x+6.6)y
=xy+6.6x-xy-6.6y
=6.6(x-y)
=6.6×[(3.15+2.17+5.61)-(2.17+5.61)]
=6.6×3.15
=20.79