s (Examples) 1-3. Using the required format detailed in the Question and Instructor Supplied Supplemental Information link, give three (3) examples from the past several months where you needed to perform basic arithmetic. To clearly identify the examples, be sure to number each example and double space between them. Example 1 must deal with fractions and example 2 must deal with percent(s). The third example can have an arithmetic content of your choice. In each of the examples include an answer to: did you need to use a calculator, perform the calculation with paper and pencil, or could you use mental math? As appropriate for each of your examples, what are some tricks you have for performing mental math with basic arithmetic? Here's one such example: Say you need to determine the 20% tip on a bill of $43.12. You can first find 10% of the bill by moving the decimal place and you get 4.312, or roughly 4.3. Then you double that (because 20% is 2 x 10%) and get 8.6, which means $8.60 is roughly 20% of $43.12. (Note: Please do not use this tip sample with different numbers as one of your examples). 1. Example 1 must