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2. Multiplication table - Wikipedia

   en.wikipedia.org/wiki/Multiplication_table

   Multiplication table. In mathematics, a multiplication table (sometimes, less formally, a times table) is a mathematical table used to define a multiplication operation for an algebraic system. The decimal multiplication table was traditionally taught as an essential part of elementary arithmetic around the world, as it lays the foundation for ...

3. Clinical Dementia Rating - Wikipedia

   en.wikipedia.org/wiki/Clinical_Dementia_Rating

   Scores in each of these are combined to obtain a composite score ranging from 0 through 3. [2] Clinical Dementia Rating Assignment Qualitative equivalences are as follows:NACC Clinical Dementia Rating. CDR is credited with being able to discern very mild impairments, but its weaknesses include the amount of time it takes to administer, its ...

4. Seismic magnitude scales - Wikipedia

   en.wikipedia.org/wiki/Seismic_magnitude_scales

   The proportion of total energy radiated as seismic waves varies greatly depending on focal mechanism and tectonic environment; [54] M e and M w for very similar earthquakes can differ by as much as 1.4 units. [55] Despite the usefulness of the M e scale, it is not generally used due to difficulties in estimating the radiated seismic energy. [56]

5. Trachtenberg system - Wikipedia

   en.wikipedia.org/wiki/Trachtenberg_system

   Trachtenberg system. The Trachtenberg system is a system of rapid mental calculation. The system consists of a number of readily memorized operations that allow one to perform arithmetic computations very quickly. It was developed by the Ukrainian engineer Jakow Trachtenberg in order to keep his mind occupied while being in a Nazi concentration ...

6. Conversion of units - Wikipedia

   en.wikipedia.org/wiki/Conversion_of_units

   The factor–label method can convert only unit quantities for which the units are in a linear relationship intersecting at 0 (ratio scale in Stevens's typology). Most conversions fit this paradigm. An example for which it cannot be used is the conversion between the Celsius scale and the Kelvin scale (or the Fahrenheit scale). Between degrees ...

7. Modified Mercalli intensity scale - Wikipedia

   en.wikipedia.org/wiki/Modified_Mercalli...

   v. t. e. The Modified Mercalli intensity scale (MM, MMI, or MCS) measures the effects of an earthquake at a given location. This is in contrast with the seismic magnitude usually reported for an earthquake. Magnitude scales measure the inherent force or strength of an earthquake – an event occurring at greater or lesser depth. (The " Mw ...