800÷125÷8用简便方法:800÷125÷8=800÷（125x8）=800÷1000=4/5分析:本题主要考察乘法结合律
800÷125÷8用简便方法800÷125÷8=800/（125*8）=800/1000=0.8
800÷125÷8=800÷（125×8）=800÷1000=0.8
800×1/125×1/8=800/1000=0.8
