125*72=125*(8*9)=125*8*9 (乘法结合律)=1000*9=9000 望采纳
=125*(8*9)=125*8*9=1000*9=9000
125*72=125*(70+2)=125*70+125*2=8750+250=9000
12572简便计算是125*72=125*8*9=1000*9=9000
125*72=(125*8)*9=1000*9=9000
125X72 =125X8X9 =1000X9 =9000
如果是乘法可以把72拆成8乘9,除法没啥简便
72x125=9x8x125=9x1000=9000 愿能帮到你.
125x5x8=125x8x5=1000x5=5000
72*125=(9*8)*125【把72分成它的两个因数:8和9;】=9*(8*125)【运用乘法结合律】=9*1000=9000