I am using a straight table and how can I make these number unbold.
Font style is showing set by Style. The bold option is not highlighted
you probably ticked the box 'Bold' on tab 'Visual Cues' in the 'Normal' row. Try to turn it off and see if it helps.
Bold is not selected in visual Cues
is there a theme applied?
Maybe it is coming from there.
Try right click-->Select Custom Format Cell --> uncheck bold
apply to all expressions or dimensions