Estimate the difference of 803 and 450.

Answer

To estimate the difference of 803 and 450, we can follow these steps:

### Step 1: Round 803 to the nearest hundred
- The number 803 has 8 in the hundreds place, 0 in the tens place, and 3 in the ones place.
- Since the tens digit (0) is less than 5, we round down.
- Therefore, 803 rounds to **800**.

### Step 2: Round 450 to the nearest hundred
- The number 450 has 4 in the hundreds place, 5 in the tens place, and 0 in the ones place.
- Since the tens digit (5) is equal to 5, we round up.
- Therefore, 450 rounds to **500**.

### Step 3: Calculate the estimated difference
- Now, we subtract the rounded values:
- 800 (from 803) - 500 (from 450) = **300**.

### Final Answer:
The estimated difference of 803 and 450 is **300**.

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