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.
As long as you need it to be! There is no magic formula which states X words = 1 paragraph or X sentences = 1 paragraph Write your topic sentence, then write as many para â¦ graphs as you need to write in order to completely and properly explain that topic, then write your conclusion. And that's how long your essay should be!