Train your brain and sharpen your mental calculation with this quiz. We’ve put together some questions to let you prove your mental arithmetic skills. They start off nice and easy, but they get progressively more challenging No calculators allowed and try to work out the answers in your head.

**1. What’s the correct answer?**

**2. What’s the correct answer?**

**3. What’s the correct answer?**

**4. What’s the correct answer?**

**5. What’s the correct answer?**

**6. What’s the correct answer?**

**7. What’s the correct answer?**

**8. What’s the correct answer?**

**9. What’s the correct answer?**

**10. What’s the correct answer?**

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