YOU SAID:

When i was five years old, i was five

INTO JAPANESE

私が5歳の時、私は5歳でした

BACK INTO ENGLISH

When I was 5 I was 5

INTO JAPANESE

私が5歳の時私は5歳でした

BACK INTO ENGLISH

I was 5 when I was 5

INTO JAPANESE

私は5歳のときに5歳でした

BACK INTO ENGLISH

I was 5 when I was 5