No, they are not, this is a borderline case.

Try the following C program and see how the periodic part of the base 2 representation of those rational numbers is truncated and how it converts back to base 10: 

#include <stdio.h>

double n[] = { 0.000005, 0.000015, 0.000025, 0.000035, 0.000045, 0.000
+055, 0.000065 };

int main(int argc, char *argv[]) {
    int i;
    for (i = 0; i < sizeof(n)/sizeof(*n); i++) {
        printf("%40.30a => %40.30f\n", n[i], n[i]);
    }
    return 0;
}

[download]
On my amd64 linux box it outputs: 
  0x1.4f8b588e368f100000000000000000p-18 =>         0.0000050000000000
+00000409015270
  0x1.f75104d551d6900000000000000000p-17 =>         0.0000150000000000
+00000380012861
  0x1.a36e2eb1c432d00000000000000000p-16 =>         0.0000250000000000
+00001198043401
  0x1.2599ed7c6fbd200000000000000000p-15 =>         0.0000349999999999
+99996933876256
  0x1.797cc39ffd60f00000000000000000p-15 =>         0.0000450000000000
+00002834104479
  0x1.cd5f99c38b04b00000000000000000p-15 =>         0.0000550000000000
+00001958069124
  0x1.10a137f38c54300000000000000000p-14 =>         0.0000649999999999
+99994305770190

[download]

In reply to Re^6: RFC: Large Floating Point Numbers - Rounding Errors by salva
in thread RFC: Large Floating Point Numbers - Rounding Errors by GAVollink

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