Answer:
0-0.49 grams.
Step-by-step explanation:
Even though the nutrition facts label says 0 grams, there's always fat.
Actually, cracker provide calories, fat, sodium, carbohydrates and protein. So, if the label says 0 grams, actually means that is approximately zero, because crackers have around 9% fat of the total grams (this depends of the type of crackers).
So, if the serving of crackers is around 6 grams, it would have around 0.5 grams, that's why they most likely have between 0 and 0.49 grams.