74x25x4x125
=2x37x(25x4)x125
=2x37x100x5x25
=(37x100)x(2x5)x5x5
=3700x10x5x5
=37000x5x5
=185000x5
=925000
运用了两数相乘的凑十或凑百、凑千的方法。
74×25×4×125
=37X2X(25X4)X125
=37X(2X125)X100
=37 X (1000/4) X100
=37/4 X 100000
=9.25X100000
=925000
原式=74×125×100
=925000.