1. Do Now Solve the equation. Underline key words. Why did you solve the problem the way you did? Mr. Waffle is a circus clown. He starts the day with sixty-four pieces of candy. At the end of the day he has given away 299 pieces of candy. How many more pieces of candy did he have to get, in addition to his original sixty-four, to be able to give away that many pieces?

2. Do Now Solve the equation. Underline key words. Why did you solve the problem the way you did? Mr. Waffle is a circus clown. He starts the day with sixty-four pieces of candy. At the end of the day he has given away 299 pieces of candy. How many more pieces of candy did he have to get, in addition to his original sixty-four, to be able to give away that many pieces? 235 pieces of candy

3. Writing Expressions Key Words:

4. Writing Expressions Key Words:  Addition – plus, sum, more than, increased by, gain of

5. Writing Expressions Key Words:  Addition – plus, sum, more than, increased by, gain of  Subtraction – minus, difference, less than, decreased by, less

6. Writing Expressions Key Words:  Addition – plus, sum, more than, increased by, gain of  Subtraction – minus, difference, less than, decreased by, less  Multiplication – times, product, double, by, of

7. Writing Expressions Key Words:  Addition – plus, sum, more than, increased by, gain of  Subtraction – minus, difference, less than, decreased by, less  Multiplication – times, product, double, by, of  Division – divided by, quotient, half of, separate equally, per

8. Writing Expressions Key Words:  Addition – plus, sum, more than, increased by, gain of  Subtraction – minus, difference, less than, decreased by, less  Multiplication – times, product, double, by, of  Division – divided by, quotient, half of, separate equally, per  A Number = variable

9. Writing Expressions Key Words:  Addition – plus, sum, more than, increased by, gain of  Subtraction – minus, difference, less than, decreased by, less  Multiplication – times, product, double, by, of  Division – divided by, quotient, half of, separate equally, per  A Number = variable  Is - Equal

10. Writing Expressions Examples:  Four times a number

11. Writing Expressions Examples:  Four times a number = 4 X n = 4(n)  A number decreased by ten

12. Writing Expressions Examples:  Four times a number = 4 X n = 4(n)  A number decreased by ten = n - 10  Eight less than a number

13. Writing Expressions Examples:  Four times a number = 4 X n = 4(n)  A number decreased by ten = n - 10  Eight less than a number = n - 8 Switch the written order of numbers when you see LESS THAN or MORE THAN

14. Writing Expressions Examples:  13 - n

15. Writing Expressions Examples:  13 - n = thirteen decreased by a number or a number less than thirteen  5n

16. Writing Expressions Examples:  13 - n = thirteen decreased by a number or a number less than thirteen  5n = five times a number  n + 8 =

17. Writing Expressions Examples:  13 - n = thirteen decreased by a number or a number less than thirteen or thirteen minus a number  5n = five times a number  n + 8 = a number increased by eight or eight more than a number or a number plus eight

18. Writing Expressions Review Vocabulary –  Variable – a letter representing an unknown number value  Expression – a set of symbols representing a mathematical value/situation  Numerical Expression – a set of numbers and operations representing a mathematical value/situation  Algebraic Expression – a set of VARIABLES, numbers and operations representing a mathematical value/situation  Inverse Operations – undoing a mathematical operation by taking its opposite