怎样算简便就怎样算:2008×20062007;72.5+12.5+12.5÷16;[(89+113)×34-0.25]÷112;(6×12.5+12.5×5)×533÷18.-数学
题文
怎样算简便就怎样算: 2008×
72.5+12.5+12.5÷
[(
(6×12.5+12.5×5)×
|
答案
(1)2008×
=(2007+1)×
=2007×
=2006+
=2006
(2)72.5+12.5+12.5÷
=72.5+12.5+75, =160; (3)[(
=[
=[
|
题文
怎样算简便就怎样算: 2008×
72.5+12.5+12.5÷
[(
(6×12.5+12.5×5)×
|
答案
(1)2008×
=(2007+1)×
=2007×
=2006+
=2006
(2)72.5+12.5+12.5÷
=72.5+12.5+75, =160; (3)[(
=[
=[
|