题目内容

13×8125=4×19×25=920×0=
68×500=406×60=8×9+6×9+16×9=
(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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