心中有数

心中有数 [xīn zhōng yǒu shù]

1. ■ know the score; have a head for figures（指数量）; have a clear idea about... ; have a grasp of a situation and know what to do; have a pretty good idea of...; know fairly well; know what's what; know one's own mind; know what others are thinking about; know ins and outs of; get [have] sb.'s number:

对计划执行情况心中有数 have a pretty clear idea of how the plan is being carried out