In this standard, Students will write expressions from verbal descriptions using letters and numbers, understanding order is important in writing subtraction and division problems. Students will understand that the expression "5 times any number, n" could be represented with 5n and that a number and letter written together means to multiply. All rational numbers may be used in writing expressions when operations are not expected. Students will use appropriate mathematical language to write verbal expressions from algebraic expressions. It is important for students to read algebraic expressions in a manner that reinforces that the variable represents a number.