问题 解答题
13×8125=4×19×25=920×0=
68×500=406×60=8×9+6×9+16×9=
答案

(1)13×8×125,

=13×(8×125),

=13×1000,

=13000,

(2)4×19×25,

=4×25×19,

=100×19,

=1900,

(3)920×0=0,

(4)68×500=34000,

(5)406×60

=(400+6)×60,

=400×60+6×60,

=24000+360,

=24360,

(6)8×9+6×9+16×9,

=(8+6+16)×9,

=30×9,

=270.

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