18分之13×0.56+5.6%×18分之5的简算

问题描述:

18分之13×0.56+5.6%×18分之5的简算

18分之13×0.56+5.6%×18分之5
13/18×0.56+5.6%×5/18
=13/18×0.56+0.56×5/18÷10
=0.56(13/18+5/18÷10)
=0.56(13/18+1/36)
=0.56×27/36
=0.56×3/4
=0.42

18分之13×0.56+5.6%×18分之5
=13/18x0.56+0.56x5/18x10
=0.56x(13/18+50/18)
=0.56x63/18
=49/15

13/18*0.56+5.6%*(5/18)
=(13*0.56+5*5.6%)/18
=0.56*(13+0.1*5)/18
=0.56*13.5/18
=0.56*3/4
=0.42

13/18*56/100+5/18*56/100*1/10=56/100*1/18*(13+2)=56/1800*27/2=0.42