问题
解答题
|
答案
(1)404×25,
=(400+4)×25,
=400×25+4×25,
=10000+100,
=10100;
(2)25×125×4×8,
=(25×4)×(125×8),
=100000;
(3)8×137×125,
=8×125×137,
=1000×137,
=137000;
(4)17×36+17×64,
=(36+64)×17,
=1700.
|
(1)404×25,
=(400+4)×25,
=400×25+4×25,
=10000+100,
=10100;
(2)25×125×4×8,
=(25×4)×(125×8),
=100000;
(3)8×137×125,
=8×125×137,
=1000×137,
=137000;
(4)17×36+17×64,
=(36+64)×17,
=1700.