Num lock. The Num Lock key exists because earlier 84-key IBM PC keyboards did not have cursor control or arrows separate from the numeric keypad. Most earlier computer keyboards had separate number keys and cursor control keys; however, to reduce cost, IBM chose to combine the two in their early PC keyboards.
The most common rule. The most common and frequently used rule for writing numbers in APA style is determined by whether the number is under 10. All those numbers should be written out in word form, such as four or seven. A number 10 and above is written as a numeral, such as 10, 17, 233.
Type in your Words. Pages: 0. There are times when it helps to know how many words per page you're writing. While a general guideline is one page is 500 words (single spaced) or 250 words (double spaced), this is a ballpark figure. The truth is the number of words per page depends on a variety of factors such as the type of font, the font size, spacing elements, margin spacing, and paragraph length to name a few.