问题
填空题
(2012•宜宾县模拟)2.009×43+20.09×2.9+200.9×0.28=______.
答案
2.009×43+20.09×2.9+200.9×0.28
=20.09×4.3+20.09×2.9+20.09÷2.8,
=(4.3+2.9+2.8)×20.09,
=10×20.09,
=200.9.
(2012•宜宾县模拟)2.009×43+20.09×2.9+200.9×0.28=______.
2.009×43+20.09×2.9+200.9×0.28
=20.09×4.3+20.09×2.9+20.09÷2.8,
=(4.3+2.9+2.8)×20.09,
=10×20.09,
=200.9.