①.0.125x0.25x0.5x64
=0.125x0.25x0.5x8x4x2=1x1x1=1
②.[1-1/2-1/4x1/2]÷九用八分之三=(1-1/2-1/4x1/2)÷75/8=(1-1/2-1/4x1/2)x8/75=(1-0.5-0.125)x8/75=3/8x8/75=1/25
三.14x32+14x67+14=14x(32+67)=14x99=14x100-14=1386
④.43.8x16.97-7.97x43.8+43.8=43.8x(16.97-7.97+1)=438
⑤十六用三分之二减【二用三分之二加四用十一分之九】=十六又三分之二减二又三分之二减四又十一分之九=14-53/11=101/11
⑥9.125+七用十六分之九加[7/8-三用十六分之九】=9又2/16+7又9/16+14/16-3又9/16=10+4=14