1.5×[1÷(21/10-2.05)+2/5]
5个回答
1.5×[1÷(21/10-2.05)+2/5]
=1.5×[1÷0.05+2/5]
=1.5×[20+2/5]
=1.5×20.4
=30.6
相关问题
2.1×1.1×0.54÷(5.4×1.21÷[5/21])=______.
口算直通车1.2+5= 2.8÷4= 1.05×6= 5÷4= 0×2.6÷50= 10-2.6-3.4= 0.25×6
2.5×4÷2.5÷4=10÷10=1,
()+20→()÷5→()×2分之1→()-10=0 ()×0.5→()-0.2()×5→()÷2.5=1
10×10×10×10÷2.5÷2.5÷2.5÷2.5×125 怎么算
(2/3-1/6-1/5×1/6)÷(1/5+1/6) 25/2+5/3÷4-5/7×14/5 29/5+21/5×17
10-10.5÷[5.2×14.6-(9.2×5.2+5.4×3.7-4.6×1.5)]+(1.7+1.9)÷0.225
简算4649.05÷0.7×1.6×0.4÷3.2×1.5 ..
(4.2+3又1/5)÷[(21.74-21)×2/3]
2 1 6 - ÷ ( )= - × ( )= - × ( )=20÷( ) =1 7 10 5