1. **State the problem:** We need to subtract 428.50 from 1000.
2. **Write the subtraction expression:**
$$1000 - 428.50$$
3. **Perform the subtraction:**
$$1000 - 428.50 = 571.50$$
4. **Explain:** Subtraction means taking away the second number from the first. Here, we take 428.50 away from 1000, leaving 571.50.
5. **Final answer:**
$$\boxed{571.50}$$
Subtraction 3E2Fee
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