99x99十199用简便方法怎么算

Question

如题所述

Answer 1

你好：

99×99+199
=99×99+100+99
=99×(99+1)+100
=99×100+100
=100×100
=10000

Answer 2

99x99十199=99x99+99+100=99x100+100=100x100=10000

Answer 3

99*99+199
=99*99+99+100
=99*(99+1)+100
=9900+100
=10000

Answer 4

99x99+199=99x(100-1)+199=9900+100=10000

Answer 5

99*99+199=99*99+100+99=99*(99+1)+100=99*100+100=100*(99+1)=100*100=10000