Answer:
0.906
Explanation:
First, you need to tell which place is the thousandths place.
Here are the digits to the right of the decimal point and the place they occupy.
9 - tenths place
0 - hundredths place
5 - thousandths place
7 - ten-thousandths place
You need to round 0.9057 to the thousandths place, which is the 5.
Step 1. Write the number and drop every digit to the rifght of the thousandth place.
0.905 (dropping the 7)
Step 2. You need to see if you keep the 5 as it is or if it goes up to 6. If the first digit to the right of the 5 is 0 through 4, you keep the 5. If the first digit to the right of the 5 is 5 through 9, you raise the 5 by 1, so it becomes 6.
Since the first digit you dropped was a 7, the 5 goes up to 6.
0.906
Answer: 0.906