问题 解答题
怎样简便就怎样算.
2×125×25 999×1325 0.45×22+4.5×7.888×125 17÷25÷4.
答案

(1)2×125×25,

=250×25,

=6250;

(2)999×1325,

=(1000-1)×1325,

=1000×1325-1×1325,

=1325000-1325,

=1323675;

(3)0.45×22+4.5×7.8,

=4.5×2.2+4.5×7.8,

=4.5×(2.2+7.8),

=4.5×10,

=45;

(4)88×125,

=11×8×125,

=11×(8×125),

=11×1000,

=11000;

(5)17÷25÷4,

=17÷(25×4),

=17÷100,

=0.17.

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