Question

25x35x125的简便运算

Answer 1

25×35×125

＝25×7×5×25×5

＝25×7×25×25

＝（25×25×25）×7

＝15625×7

＝109375

Answer 2

25x35x125
=25x5*7x125
=125*125*7
=125*（700+7*25）
=125*（700+175）
=125*875
=125*（1000-125）
=125000-125*125
=125000-12500-125*25
=112500-125*50/2
=112500-6250/2
=112500-3125
=110000-625
=109375

Answer 3

25x35x125
＝25x5x125x7
＝125x125x7
＝109,375