Find the error intervals for the following rounded numbers

Question 1:

5.269 (3 d.p.)

5.2685≤x<5.2695

Question 2:

3.49 (3 s.f.)

3.485≤x<3.495

Question 3:

3.818 (3 d.p.)

3.8175≤x<3.8185

Question 4:

8.77 (3 s.f.)

8.765≤x<8.775