6.3×60%+40%×6又3/10 =6.3×0.6+0.4×6.3 =6.3×(0.6+0.4)=6.3×1=6.3120×(1-1/4+20%) =120-120×1/4+120×20%=120-30+24=114260÷(50%÷4/5+1) =260÷(5/8+1)=260÷13/8=16032×25%×125=(25%×4)×(8×125)=1×1000=1000