问题
解答题
用你喜欢的方法计算.
|
答案
(1)25×125×4,
=25×4×125,
=100×125,
=12500;
(2)38×101,
=38×(100+1),
=38×100+38,
=3800+38,
=3838;
(3)125×16,
=125×8×2,
=1000×2,
=2000;
(4)27×99+27,
=27×(99+1),
=27×100,
=2700.
用你喜欢的方法计算.
|
(1)25×125×4,
=25×4×125,
=100×125,
=12500;
(2)38×101,
=38×(100+1),
=38×100+38,
=3800+38,
=3838;
(3)125×16,
=125×8×2,
=1000×2,
=2000;
(4)27×99+27,
=27×(99+1),
=27×100,
=2700.