125 X 11 X 8
= 125 X 8 X 11
= 1000 X 11
= 11000
404 X 25
= 101 X 4 X 25
= 101 X ( 4 X 25)
= 101 X 100
= 10100
800÷25
= （800X4)÷ （25 X 4)
= 3200 ÷ 100
= 32
125*11*8=（125*8）*11=1000*11=11000
404*25=（400 4）*25=400*25 4*25=10000 100=10100
800/25=（8*100）/25=8*100/25=8*4=32
请参考
125*11*8
=（125x8）x11
=1000x11
=11000
404*25
=25x4x101
=100x101
=10100
800/25
=800x4÷（25x4）
=3200÷100
=32
答：13(3-3/13)=36详情>>
答：详情>>
