0.125×11分之4+8分之1×6.25-12.5%简便计算

问题描述:

0.125×11分之4+8分之1×6.25-12.5%简便计算

因为0.125=1/8 12.5%=1/8
所以1/8(4/11+25/4-1)=247/452

0.125(4/11+25/4-1)

0.125×11分之4+8分之1×6.25-12.5%=1/8*11/4+1/8*25/4-1/8=1/8(11/4+25/4-1)
=1/8(36/4-1)=1/8*8=1