back-of-the-envelope calculation

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back-of-the-envelope calculation

A calculation or mathematical formulation that is approximated in a quick, informal, and rough manner, as might be sketched out on a scrap of paper (such as the back of an envelope). When it came time to pay the bill, we had to do some back-of-the-envelope calculations to figure out who owed how much.
References in periodicals archive ?
Day and Time calculation function that is useful for estimating the time and number of days required for warehouse operations
When each calculation was categorised according to the topics of the strands and content descriptions in the Australian Curriculum: Mathematics the most common topics of calculations were revealed as being either money and financial (in the number and algebra strand) or time (in the measurement and geometry strand).
Hsu Shu-bo, chairman of the Life Insurance Association, noted that the new calculation method will cut the pressure of stock selloff by 50% to NT$50-60 billion by insurance firms, down from NT$100 billion based on the original calculation method for RBC.
The linear module is modelled in an interactive 3D user interface, so the user can freely rotate, move and zoom the calculation model in the display.
calculation of tariffs for heating energy and water supply;
Calculations of fatigue life using BEARINX are performed according to DIN ISO 281, Supplement 4, which defines the standards for calculating fatigue life for computer-assisted calculation procedures.
The software program includes four main parts: final additions, least cost charge calculations, melt stock casting and calculating campaigns of charges.
In the 1940s, some young theorists who embraced the tool had to meet in secret to learn how to use it to tackle formidable calculations.
Results of systematic plane wave Born approximation calculations with exchange for K, L, and M shell ionization cross sections over the range of electron energies used in microanalysis are presented.
Providing quality instruction to aid student nurses on dosage calculation has been a challenging task for nursing educators and has become a priority with schools of nursing (Worrell & Hodson, 1989).
com introduces a software program, Nip-Stat[R], enabling fast calculation of many different nip roller equations for Palm based platforms.
Then, it must do a completely separate calculation, requiring a completely different set of records.
Most major disk drive manufacturers, as well as disk drive silicon providers, already have products that support this new XOR calculation standard.
The products available initially include Host Services, Encryption, Deposit Calculations, Interest Rate Calculations, Investment Calculations, Loan Calculation, Trade Services and Adding Machine with components for Time/data Calculations, Event, Product, Sequence, Object/Data Broker, Bank Printing, Currency and Security available soon.
Since the supplier no longer has complete control over the tax calculation function when using ERS, this becomes more complicated.