1. An algebraic expression contains:
1) one or more numbers or variables, and
2) one or more arithmetic operations.
Examples:
x - 3
3 • 2n

2. In expressions, there are many different ways to write multiplication.
1) ab
2) a • b
3) a(b) or (a)b
4) (a)(b)
5) a x b
We are not going to use the multiplication symbol any more. Why?

3. Division, on the other hand, is written as:1)
2) x ÷ 3

4. The terms with * are ones that are often used.

5. Which of the following expressions represents 7 times a number decreased by 13?
Answer Now

6. Which one of the following expressions represents 28 less than three times a number?
Answer Now

7. Write a verbal expression for: 1) 8 + a.
The sum of 8 and a 2)
The ratio of m to r
Do you have a different way of writing these?

8. Which of the following verbal expressions represents 2x + 9?
9 increased by twice a number
a number increased by nine
twice a number decreased by 9
9 less than twice a number
Answer Now

9. Which of the following expressions represents the sum of 16 and five times a number?
Answer Now

10. When looking at the expression 103, 10 is called the
base
and 3 is called the
exponent or power.
103 means 10 • 10 • 10
103 = 1000

11. How is it said? 21 Two to the first power 22
Two to the second power or two squared 23
Two to the third power or two cubed
2n7
Two times n to the seventh power

12. Which of the following verbal expressions represents x2 + 2x?
the sum of a number squared and twice a number
the sum of a number and twice the number
twice a number less than the number squared
the sum of a number and twice the number squared
Answer Now

13. Which of the following expressions represents four less than the cube of a number?
Answer Now

14. Order of Operations Please Excuse My Dear Aunt Sally Parenthesis
Exponents
Multiplication/Division
Addition/Subtraction

15. Square Root and Squared