问题
解答题
用简便方法计算.
|
答案
(1)125×9×8
=125×8×9,
=1000×9,
=9000;
(2)53×45+47×45
=(53+47)×45,
=100×45,
=4500;
(3)(7+25)×4
=7×4+25×4,
=28+100,
=128.
用简便方法计算.
|
(1)125×9×8
=125×8×9,
=1000×9,
=9000;
(2)53×45+47×45
=(53+47)×45,
=100×45,
=4500;
(3)(7+25)×4
=7×4+25×4,
=28+100,
=128.