问题
解答题
|
答案
(1)2503-497,
=2503-500+3,
=2003-3,
=2006;
(2)125×24,
=125×8×3,
=1000×3,
=3000;
(3)1200÷25,
=(1200×4)÷(25×4),
=4800÷100,
=48;
(4)108×9+108,
=108×(9+1),
=108×10,
=1080.
|
(1)2503-497,
=2503-500+3,
=2003-3,
=2006;
(2)125×24,
=125×8×3,
=1000×3,
=3000;
(3)1200÷25,
=(1200×4)÷(25×4),
=4800÷100,
=48;
(4)108×9+108,
=108×(9+1),
=108×10,
=1080.