2. = 55 Calories C C x 55 Cx 55 Let C be the number of cookies Chris consumed. Algebraic expression
3. Explore Step 1: Fold a piece of paper in half vertically. Open up your paper and then fold your paper in half horizontally. Open the paper up and lay it flat on your desk. Step 2: Label each section of your paper as shown. Step 3: Place each word or phrase from the list below into one of the sections on your paper. Be prepared to explain your placement of each word or phrase. Step 4: Draw the mathematical symbol used to represent each operation at the bottom corner of each box.
4. Step 5: Eight algebraic expressions are listed below. There are two representing each operation. Place the algebraic expressions into the box that describes each operation. x − 4 6 ÷ p 5 × w 14 + m 30 − g 10k y + 11 h/2 Step 6: In each box, write your own algebraic expression that uses the operation listed at the top of that box. Compare your expressions with a classmate. Are the expressions exactly the same? Should they be?
5. Write an algebraic expression for each phrase. a. five times k b. seven more than x c. f divided by two d. a number y decreased by seventeen e. eleven plus four times w = 5k or 5(k) or 5 ∙ k When multiplying a number and a variable, write the number first. = x + 7 = f ÷ 2 or f/2 = y − 17 = 11 + 4w or 11 + 4(w) or 11 + 4 ∙ w
6. Write a phrase for each algebraic expression. 12 + t 8x u − 5 3x − 2 = the sum of twelve and t = the product of eight and x = five less than u = three times x minus two
