脱式计算.(能简算的要简算)(1) 9 32 ÷[ 3 4 -( 7 16 - 1 4
脱式计算.(能简算的要简算)(1)932÷[34-(716-14)](2)35×(17+821÷23)(3)200.5+9.9×2005(4)20092010×2011....
脱式计算.(能简算的要简算)(1) 9 32 ÷[ 3 4 -( 7 16 - 1 4 )] (2) 3 5 ×( 1 7 + 8 21 ÷ 2 3 ) (3)200.5+9.9×2005(4) 2009 2010 ×2011 .
展开
卑漫正6580
2014-08-28
·
TA获得超过191个赞
知道答主
回答量:130
采纳率:100%
帮助的人:61.2万
关注
(1) ÷[ -( - )] , = ÷[ + - ], = ÷[1- ], = ÷ , = ;
(2) ×( + ÷ ) , = ×( + ), = × , = ;
(3)200.5+9.9×2005, =2005×0.1+9.9×2005, =2005×(0.1+9.9), =2005×10, =20050;
(4) ×2011 , = ×(2010+1), = ×2010+ ×1, =2009+ , = 2009 . |
收起
为你推荐: