Round Off to Four Significant Digits

 Rounding to four significant digits: 2567.12345

The four most significant digits are 2567.

The fifth digit is 1, which is less than 5, so we simply drop it.

The rounded number is 2567.

Rounding to four significant digits: 0.000459821

The four most significant digits are 4598 (ignoring leading zeros).

The fifth digit is 2, which is less than 5, so we simply drop it.

The rounded number is 0.0004598.

 Rounding to four significant digits: 1200000

The four most significant digits are 1200.

There are no additional digits to consider, so the number remains unchanged.

The rounded number is 1200000.

Rounding to four significant digits: 0.0056789

The four most significant digits are 5678 (ignoring leading zeros).

The fifth digit is 9, which is greater than 5, so we round up the fourth digit (8) by 1.

The rounded number is 0.005679.

 Rounding to four significant digits: 99.999999999

The four most significant digits are 99.99.

The fifth digit is 9, which is greater than 5, so we round up the fourth digit (9) by 1.

The rounded number is 100.

 Rounding to four significant digits: 87654321.123456

The four most significant digits are 8765.

The fifth digit is 4, which is less than 5, so we simply drop it.

The rounded number is 87650000.

Rounding to four significant digits: 0.00000007894

The four most significant digits are 7894 (ignoring leading zeros).

The fifth digit is 0, so we drop it.

The rounded number is 0.00000007894.

Rounding to four significant digits: 99.999999999

The four most significant digits are 99.99.

The fifth digit is 9, which is greater than 5, so we round up the fourth digit (9) by 1.

The rounded number is 100.

Rounding to four significant digits: 567.892345

The four most significant digits are 567.8.

The fifth digit is 9, which is greater than 5, so we round up the fourth digit (8) by 1.

The rounded number is 567.9.

Rounding to four significant digits: 0.006785

The four most significant digits are 6785 (ignoring leading zeros).

There are no additional digits to consider, so the number remains unchanged.

The rounded number is 0.006785.

Rounding to four significant digits: 32010

The four most significant digits are 3201.

There are no additional digits to consider, so the number remains unchanged.

The rounded number is 32010.

Rounding to four significant digits: 1204500

The four most significant digits are 1205.

There are no additional digits to consider, so the number remains unchanged.

The rounded number is 1204500.

Rounding to four significant digits: 8.9301

The four most significant digits are 8.930.

The fifth digit is 1, which is less than 5, so we simply drop it.

The rounded number is 8.930.