To round the number 5.5555 to the nearest thousandth, follow these steps:
1. Identify the thousandths place: The thousandth place is the third digit to the right of the decimal point. In the number 5.5555, the digit in the thousandth place is 5.
2. Look at the digit in the next smaller place: The next smaller place is the ten-thousandths place, which is the fourth digit to the right of the decimal point. In the number 5.5555, this digit is also 5.
3. Determine if you should round up or down:
- If the digit in the ten-thousandths place is 5 or greater, you increment the digit in the thousandths place by 1.
- If the digit in the ten-thousandths place is less than 5, you leave the digit in the thousandths place unchanged.
4. Apply the rounding rule: Since the digit in the ten-thousandths place is 5, which is 5 or greater, you round up the digit in the thousandths place from 5 to 6.
Therefore, when rounding 5.5555 to the nearest thousandth, the result is 5.556.
