Is there a way to nudge graphics using grid snapping?

Nudge size

This applies when moving objects using the arrow? keys on the keyboard

Nudge modifiers

To modify the nudge distance, use these key combinations while using the arrow keys:

Ctrl nudge 5 times the normal distance

Shift nudge 10 times the normal distance

Ctrl+Shift nudge by l/5th the normal distance

Alt nudge by 1 pixel

Alt+Shift nudge by 10 pixels

Example

Create a new drawing.

Select Utilites | Options | Grid and Ruler

Set the Major Spacing value to be 100px and the number of subdivisions to be 1

Then click on the general tab

Set the nudge size to be 10px

Click on Apply and then Ok

Next enable your grid by pressing the # key

Enable 'Snap to Grid' by right clicking on the page and selecting 'Snap to Grid'

Draw a square using the rectangle tool that's 100px * 100px. (hold down the ctrl key when drawing the rectangle to make the width and height equal.

Now hold down the shift key and use the arrow keys to move the object created and notice how it snaps to the grid?

In this example we have set the number of subdivisions to be just 1. This is only to illustrate how this works. In reality you might have major spacing set to 100px, subdivisions set to 10 and the nudge size set to 10. Then every nudge will snap to a subdivision.