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  2. Worksheet - Wikipedia

    en.wikipedia.org/wiki/Worksheet

    In accounting, a worksheet is, or was, a sheet of ruled paper with rows and columns on which an accountant could record information or perform calculations. These are often called columnar pads, and typically green-tinted. In computing, spreadsheet software presents, on a computer monitor, a user interface that resembles one or more paper ...

  3. Subtraction - Wikipedia

    en.wikipedia.org/wiki/Subtraction

    Subtraction is an operation that represents removal of objects from a collection. [ 1 ] For example, in the adjacent picture, there are 5 − 2 peaches—meaning 5 peaches with 2 taken away, resulting in a total of 3 peaches. Therefore, the difference of 5 and 2 is 3; that is, 5 − 2 = 3.

  4. Duplicating machines - Wikipedia

    en.wikipedia.org/wiki/Duplicating_machines

    The top sheet could be typed, drawn, or written upon. [citation needed] The second sheet was coated with a layer of colored wax. The pressure of writing or typing on the top sheet transferred colored wax to its back side, producing a mirror image of the desired marks. (This acted like a reverse of carbon paper.) The wax-supply sheet was then ...

  5. 2004–2008 volcanic activity of Mount St. Helens - Wikipedia

    en.wikipedia.org/wiki/2004–2008_volcanic...

    Seismic activity continued to accelerate following the USGS advisory, with earthquakes approaching magnitude 2.5 occurring at a rate of about four per minute on September 29, prompting the USGS and Pacific Northwest Seismograph Network to issue a second advisory, increasing the "alert level" to the second of three levels, and warn of an ...

  6. Cloze test - Wikipedia

    en.wikipedia.org/wiki/Cloze_test

    A cloze test (also cloze deletion test or occlusion test) is an exercise, test, or assessment in which a portion of text is masked and the participant is asked to fill in the masked portion of text. Cloze tests require the ability to understand the context and vocabulary in order to identify the correct language or part of speech that belongs ...

  7. First responder - Wikipedia

    en.wikipedia.org/wiki/First_responder

    Perhaps the earliest uses in print occurred in two articles in The Boston Globe in August 1973, about proposed ambulance regulations in Massachusetts. "…any police or fireman who staff a 'dual-purpose' vehicle would have to be trained to offer 'first-responder' care — that is, to stabilize a patient until more sophisticated help arrived."

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