Algebraic expressions and parts of an expressions

Algebraic expressions and parts of an expressions

Open Ended

Rectangle Perimeter

To compute the perimeter of a rectangle you add the length, l and width, w and double this sum.

Write an expression for the perimeter of a rectangle. Use the expression to find the perimeter of a rectangle with length 30 and width 75.

Open Ended

For each expression Figure it out! Identify the terms, coefficients, and constants.

1. 12a - 6b + 4

2. 4x - 2y

3. c - 32

4. 3x + 2

Open Ended

Summarizing

Part A:

Hannah is 3 years younger than Katie.

Joey is twice as old as Hannah. Let k stand for Katie’s age.

Write an expression below to represent Hannah’s age. Using k, write an expression below for Joey’s age.

Part B:

Now, test your expressions out to see if they are accurate. Pick an age for Katie and then substitute that value in for the variable k to see if your expressions make sense.

Part C:

Who is the oldest? Justify your thinking by providing an example/explanation.