Algebraic expressions specify numerical calculations using numbers and letters or symbols standing for numbers.
What to look forStudents leave behind the symbol “x” for multiplication and come to understand that the juxtaposition of a number and a variable such as 3x implies multiplication between 3 and x.
Sample AssessmentIf a=115 and b=45, what would be the value of the expression b+(a - b)?
a 115 b. 185 c. 205 d. 275
Answer: a. 115