| невярно | wrong; untruly; sl. off the beam | |
| невярно | отговарям НЕВЯРНО answer wrong, give a wrong answer; sl. o.'s answer is off the beam | |
| пресмятане | calculating, etc. вж. пресмятам; calculation, computation | |
| пресмятане | no мое ПРЕСМЯТАНЕ by my reckoning | |
| политех. | пресмятане наум | mental arithmetic |