25x44简便方法

1、25x44简便方法：

=25 x (4 x 11)

=25 x 4 x11

=100 x 11

=1100

2、25x44简便方法:

=(20 + 5) x 44

=20 x 44 + 5 x44

=880 + 220

=1100

3、25x44简便方法:

=25 x (40 + 4)

=25 x 40 + 25 x4

=1000 + 100

=1100