问题
填空题
巧填空
99+99+99+99+4=100×______=______.
答案
99+99+99+99+4,
=99+1+99+1+99+1+99+1,
=(99+1)+(99+1)+(99+1)+(99+1),
=100+100+100+100,
=100×4,
=400.
故答案为:4,400.
巧填空
99+99+99+99+4=100×______=______.
99+99+99+99+4,
=99+1+99+1+99+1+99+1,
=(99+1)+(99+1)+(99+1)+(99+1),
=100+100+100+100,
=100×4,
=400.
故答案为:4,400.