1) Do you know a quick way to multiply by or or mentally? For example, what are and and ? You should think about the method you use. Your method may work for you but it may not be a good method to teach young students because of limitations. In question 2, we will examine the limitations of some short-cut methods. 2) Which of the following statements are correct and appropriate to use with all numbers in base ? a. To multiply a number by , put a at the end of the number. b. To multiply a number by , move the decimal point one place to the right. c. To multiply a number by , move all the digits one place to the left