Off the top of my head
Meaning: without giving it too much thought or without precise knowledge.
Π‘Π΅ΡΠΈΠ°Π»Ρ ΠΈ ΡΠΈΠ»ΡΠΌΡ Π½Π° Π°Π½Π³Π»ΠΈΠΉΡΠΊΠΎΠΌ Ρ ΡΡΠ±ΡΠΈΡΡΠ°ΠΌΠΈ. +1 ΠΠ΅ΡΡΡ Π² ΠΏΠΎΠ΄Π°ΡΠΎΠΊ π
Example: Mary: How much do you think this car would be worth on a trade? Fred: Well, right off the top of my head, I’d say about a thousand. Tom: What time does the morning train come in? Bill: Off the top of my head, I don’t know.