231+132-(32+55)簡便計算
231+132-(32+55)
=231+132-32-55
=231+100-55
=331-55
=331-31-24
=300-24
=276
33*67+67*67的簡便運算
33*67+67*67
=67×(33+67)
=67×100
=6700
19×33+71×33怎麼簡便計算
19×33+71×33
=(19+71)x33
=90x33
=90x30+90x3
=2700+270
=2970
19*27+190*4+19*33簡便計算
19*27+190*4+19*33
=19×(27+40+33)
=19×100
=1900