1. **Problem:** Calculate $4 \times 5 \div 2$ using the order of operations. 2. **Formula and rules:** According to the order of operations (PEMDAS/BODMAS), multiplication and division are performed from left to right. 3. **Step-by-step calculation:** - First, multiply $4 \times 5 = 20$. - Then divide $20 \div 2$. - Show intermediate cancellation: $$20 \div 2 = \cancel{20} \div \cancel{2} = 10$$ 4. **Final answer:** $$4 \times 5 \div 2 = 10$$ This means when you multiply 4 by 5 and then divide by 2, the result is 10.