用简便方法计算.125×27×835×1025300÷4÷2565.29-3.81-6.1934×58+6

用简便方法计算.125×27×835×1025300÷4÷2565.29-3.81-6.1934×58+66×58.

第1个回答  2014-12-01
(1)125×27×8,
=(125×8)×27,
=1000×27,
=27000;

(2)35×102,
=35×(100+2),
=3500+70,
=3570;

(3)5300÷4÷25,
=5300÷(4×25),
=5300÷100,
=53;

(4)65.29-3.81-6.19,
=65.29-(3.81+6.19),
=65.29-10,
=55.29;

(5)34×58+66×58,
=(34+66)×58,
=100×58,
=5800.
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