用简便方法计算（写出简算过程）．0.68+7.313+0.32-7.314×27+14+57÷48×237×12.5%

Question

用简便方法计算 （写出简算过程）．
0.68+7.313+0.32-7.3
(1)/(4)×(2)/(7)+(1)/(4)+(5)/(7)÷4
8×237×12.5%

Answer 1

（1）0.68+7.313+0.32-7.3
=（0.68+0.32）+（7.313-7.3）
=1+0.013
=1.013

  （2）(1)/(4)×(2)/(7)+(1)/(4)+(5)/(7)÷4
=(1)/(4)×(2)/(7)+(1)/(4)+(5)/(7)×(1)/(4)
=（(2)/(7)+1+(5)/(7)）×(1)/(4)
=2×(1)/(4)
=(1)/(2)

  （3）8×237×12.5%
=（8×12.5%）×237
=1×237
=237