2. In this lesson you will learn how to read and write algebraic expressions by using variables.

3. 15 ÷ 3
4 x 6
12 - 3

4. “10 less than a number” is NOT the same as “10 minus a number.”
Read carefully and don’t forget the variable!

5. Variable- a letter that takes the place of a number
x, y, a, b, l, w, h

6. + add, plus, total, sum, increased by
subtract, minus, difference,
decreased by, less than
x multiply, product, total
_ divide, quotient, break into equal
parts

8. In this lesson you have learned how to read and write algebraic expressions by using variables.

9. Write an algebraic expression for the following:
12 less than x
seventeen more than y

10. Write the following algebraic expressions in two different ways in word form: