1.25×67.875+125×6.7875+1250×0.053375．

题目

1.25×67.875+125×6.7875+1250×0.053375．

答案

1.25×67.875+125×6.7875+1250×0.053375，
=125×0.67875+125×6.7875+125×0.53375，
=125×（0.67875+6.7875+0.53375），
=125×8，
=1000．

先把1.25×67.875和1250×0.053375变成125×0.67875和125×0.53375所以1.25×67.875+125×6.7875+1250×0.053375=125×0.67875+125×6.7875+125×0.53375=125×（0.67875+6.7875+0.53375）=125×8=1000．

本题考点：四则混合运算中的巧算．

考点点评：解答此题的关键是把1.25×67.875和1250×0.053375变成125×0.67875和125×0.53375，再利用乘法的分配律计算．