Question

256×99-99×147 +109巧算

Answer 1

256×99一99×147+109
=99×(256一147)+109
=99×109+109
=99×109+109×1
=109x(99+1)
=109x100
=10900

Answer 2

256x99-99x147+109
=（256-147）ⅹ99+99+10
=（256+1-147）x99+10
=110x99+10
=110x（100-1）+10
=110x100-110+10
=10900

Answer 3

256*100-256-100*147-147+109=25600-14700-（147+256-109）=10900-（403-109）=10900-294=10606

Answer 4

256×99-99×147 +109=256x100-256 + 100x147-147 +109=100(256-147)+256-147 +109=
101(256-147)+109=
101x109 +109=100x109 +2x109=
10900+218=11118

Answer 5

256×99-99×147+109
=256×99-99×147+99+10
=(256-147+1)×99+10
=110×99+10
=(100+10)×99+10
=100×99+10×99+10
=9900+10×(99+1)
=9900+1000
=10900