Answer:
1.33
Step-by-step explanation:
2.87349 rounded to the nearest thousandth is 2.873 because the number next to it (4) is less than 5.
1.54324 rounded to the nearest thousandth is 1.54324 is 1.543 because the number next to it (2) is less than 5.
Then you do 2.873 - 1.543 and that = 1.33. So 1.33 is your final answer :)