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1 счёт в уме
1) General subject: mental arithmetic, mental calculations2) Construction: mental calculation -
2 в уме
разг.1) (мысленно, не записывая (считать, подсчитывать, решать и т. п.)) make a quick mental reckoning; do it in one's headЭдвард быстро прикинул в уме: "Сто семьдесят плюс сто двадцать - двести девяносто тысяч..." (Н. Островский, Рождённые бурей) — Edward made a quick mental reckoning: 'A hundred and seventy plus a hundred and twenty - two hundred and ninety thousand...'
Чуликов - студент из Москвы, и никто лучше него не делает расчёты для стрельбы: без всяких таблиц мгновенно соображает в уме и никогда не ошибается. (В. Тендряков, День, вытеснивший жизнь) — Chulikov was a student from Moscow, and no one could match him at making calculations for the guns. He did it all in his head without a single table and without a single mistake.
2) (соображаешь, что делаешь, говоришь и т. п.?!) are you in your right mind?; have you taken leave of your senses?; you are mad (crazy)!- Да в уме ли вы, сударь? Как? При нынешних обстоятельствах сечь казака? За что? За ошибку, от прямой и честной верности происшедшую? (С. Голубов, Багратион) — 'Have you taken leave of your senses, Sir?' continued Bagration. 'Flog a Cossack under present circumstances! What for? For a mistake committed during the honest performance of his duty?..'
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