Question 1210536
```python
n = 100
sum_100 = n * (n + 1) // 2
print(f"{sum_100=}")



```

```text
sum_100=5050


```

To find the sum of the first 100 terms of the arithmetic series , we can use the formula for the sum of the first  natural numbers:

### Calculation:

Given :

**The sum of the first 100 terms is 5,050.**