问题
解答题
怎样简便就怎样算.
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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.