Extractions: AND DECIMALS In this Lesson, we will answer the following: How do we multiply by a single digit? In writing, how do we multiply whole numbers? How do we multiply decimals? How can we find a percent of a whole number? How can we find the area of a rectangle? Let us face facts. The student will quickly replace written multiplication with a calculator. (What if you don't have a calculator? What if you don't have a pencil Lesson 9 .) Therefore, what should the student know about written multiplication that deserves to be called educational? The student should know that it is based on decomposing the multiplicand . And the student should know the basics of placing the decimal point. First:
