Find the error intervals for the following truncated numbers

Question 1:

0.007 (1 s.f.)
0.007≤x<0.008

Question 2:

0.0444 (3 s.f.)
0.0444≤x<0.0445

Question 3:

0.5 (1 s.f.)
0.5≤x<0.6

Question 4:

2.555 (3 d.p.)
2.555≤x<2.556