2.5×(40%-1/3)+2÷1.25% 本人一定采纳,
1个回答
2.5*(40%-1/3)+2÷1.25%
=5/2*(2/5-1/3)+2÷5/4
=5/2*1/15+8/5
=1/6+8/5
=53/30
相关问题
简便方法计算.3[1/2]÷4+360×25%+0.25×36.5;(7.25×40%+2.75×[2/5])÷20%;
口算.40×0.7= 8.4÷0.2= 3.67×0.2= 3.5÷10= 3.6÷0.6= 1.7×0.5= 1.25
口算.40×0.7= 8.4÷0.2= 3.67×0.2= 3.5÷10= 3.6÷0.6= 1.7×0.5= 1.25
直接写得数. 20×5%= 1÷1%= 1-70%= 2÷2%= 1 2 -0.25= 1 5 +10%= 40×20%
1.-3^2-[-9÷(-3)^2-1]-(-5)^2×(-2)^3÷1/0.25=
(一)计算:(1)-9+5×(-6)-(-4)2÷(-2)3;(2)25×[3/4]-(-25)×[1/2]+25×(−
直接写出得数1-25%= [3/7]×49= [3/5]÷[9/25]= [5/6]×40%= 1÷[5/8]= 5×[
(1)250×29×4 (2)(400+40)×25 (3)340÷5-18 (4)4040÷5+80 (5)78×6+
直接写得数[2/3]×[1/2]=5÷[1/5]=1.25×0.1×8=[3/5]÷5=3.14×5=[1/4]-[1/
1/2÷( )×3/5+9/25=21/25