99.9 ×9.9(巧算) (12.5+2.5)×0.8(巧算)急死人.
来源:学生作业帮助网 编辑:六六作业网 时间:2024/10/06 09:38:29
99.9×9.9(巧算)(12.5+2.5)×0.8(巧算)急死人.99.9×9.9(巧算)(12.5+2.5)×0.8(巧算)急死人.99.9×9.9(巧算)(12.5+2.5)×0.8(巧算)急死
99.9 ×9.9(巧算) (12.5+2.5)×0.8(巧算)急死人.
99.9 ×9.9(巧算) (12.5+2.5)×0.8(巧算)
急死人.
99.9 ×9.9(巧算) (12.5+2.5)×0.8(巧算)急死人.
99.9×9.9=99.9×(10-0.1)=999-9.99=999-10+0.01=989.01 (12.5+2.5)×0.8=12.5×0.8+2.5×0.8=10+2=12
希望采纳
99.9 ×9.9(巧算) (12.5+2.5)×0.8(巧算)急死人.
99.9+999×9.9(巧算) =
99.9*99.9+19.99巧算
67*99.9+9.9*333(用巧算)
99×99.9+9.9简算
9.9加99.9 简算
9.9+99.9+199.9=
9.9+99.9+999.9
0.9+9.9+99.9+999.9
0.9+9.9+99.9+0.3 用简便算法计算(脱式)!
12.5x(80.8)x2.5巧算
12.5*(8+0.4)+25 巧算
8.8×(12.5×9.9)怎么简便运算?
(46×0.25)×0.4+9.9×46(巧算)
56.5×9.9+56.5巧算
9.9×10.1巧算
0.875*9.9+8.75巧算
9.9×1.02 巧算