That's correct, as long as the manufacturer hasn't already subtracted those fibers from the carb figure once - as you in that case would end up with half or so of what the item actually contains. But (as mentioned earlier) I don't know how the regulations are in Canada?..

Another way is to do a quick math, with rounded-off figures:

fat grams x 9 (= number of fat kcals)
protein grams x 4 (= number of protein kcals)
carb grams x 4 (= number of carb kcals)
_________________
TOTAL: (= total number of kcals)

If the sum of these roughly matches the kcal figure stated on the package, then the fiber is already subtracted from the carb count.

Or use the Hidden Carbs Inspector - link to the right on this page.

/gil

Ps. Love that doggy line in your sig, mollymom!