问题 解答题

用简便方法计算.

125×3225×4425×32×125

201×35-3545×99+4567×48-57×48.

答案

(1)125×32

=125×8×4,

=1000×4,

=4000;

(2)25×44

=25×4×11,

=100×11,

=1100;

(3)25×32×125

=(25×4)×(8×125),

=100×1000,

=100000;

(4)201×35-35

=(201-1)×35,

=200×35,

=7000;

(5)45×99+45

=(99+1)×45,

=100×45,

=4500;

(6)67×48-57×48

=(67-57)×48,

=10×48,

=480.

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