1. If I had to take a guess, I'd say... [she's about 35 years old]. 2. It's difficult to say, but I think... [our customers are more satisfied]. 3. Off the top of my head, I'd say... [the company has 500 employees]. (= what I remember/estimate, without checking the actual statistics) 4. It's about... [10 miles away]. 5. It's around... [three hours long]. 6. I wouldn't be surprised if... [Peter asks Jill to marry him]. 7. There's a good chance... [it'll rain tomorrow]. 8. I have a feeling/hunch... [the boss won't be happy about this]. (hunch = an instinctive feeling) 9. I bet... [he'll be late]. 10. Your guess is as good as mine. (= I don't know)
Make sure you compare your receipts and authorized drafts against your monthly account statement. If you notice any unauthorized charges, contact your financial institution immediately. Secure your monthly statements immediately after verifying the charges.