...for a 10 week old Staffy?

So long as it looks and acts healthy why bother about weighing it? I never weigh my pups once they are on their feet, just check out their ribs and tummies. So long as they are putting on weight and growing I'm happy. You can become paranoid about weight. We had a lot of dogs in our breed looking anorexic a few years ago because the KC had put the wrong weight on the breed standard and everyone was trying to keep their dogs below the weight (well, not everyone :D )