(27+23)*(77+73)*25簡便運算步驟

(27+23)*(77+73)*25簡便運算步驟


(27+23)*(77+73)*25
=50*150*25
=300*25*25
=300*625
=187500



11.2*63.5+36.5*1.12的簡便運算


原式=1.12*635+1.12*36.5
=1.12*(635+36.5)
=1.12*671.5
=752.08



36×36+36×63的簡便運算?


36×36+36×63
=36×(36+63)
=36×(100-1)
=3600-36
=3564



89×36+36×12-36簡便計算


89×36+36×12-36
=(89+12-1)×36
=100*36
=3600



36×12-3600÷12簡便計算


36×12-3600÷12
=36×12-36×100÷12
=12×3×12-12×3×100÷12
=3×12×12-3×100×12÷12
=3×144-3×100
=3×44
=132