0.125×64×0.25
×101-0.75
÷
2x﹣13=39 13x﹣7.5x=3.4
3成=
75%=( )折
六成五=( )%
80%=( )成
3%×5=
2.11×0.1=
:x=0.5:0.2 x-x-5=18 4x+3×0.7=6.5
①
②
③39×6.4+3.9×36
④125×8.8