If the cut list dimensions are created by SolidWorks then the decimal places are controlled by the sheet properties. If you created the values by clicking on dimensions in the model then you can set the decimal places in the model.
Something I have done in the past, that is a bit of a faff but works is to use a BOM to display the Cutlist. This means that you can use a formula, which allows you to control precision.
There are a few tricks here. The first is to use an IF statement to give a blank value if the row is blank, the second is to multiply the column header by 1 to trick SW into recognising the input as numeric but not adjusting the value. You would then hide the columns you don't want. Surely there must be a better way, but sharing anyway