Round 2.71828 to 3 Decimal Places

Rounding simplifies a number while keeping it close to the original value.

The rule: Look at the digit to the RIGHT of where you're rounding.

• If it's 5 or greater: round UP (increase the digit)

• If it's less than 5: round DOWN (keep the digit the same)

We want to round 2.71828 to the 3 decimal places.

The deciding digit (the one to the right of our rounding position) is: 2

The deciding digit is 2.

Since 2 is less than 5, we round DOWN.

2.71828 rounded to 3 decimal places = 2.718

Original number: 2.71828

Rounded result: 2.718

The difference is 0.0002800000, which confirms our rounding is correct.

The rounded value is as close as possible to the original while having only 3 decimal places.