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Help Mr. Waffle, a circus clown, solve a candy problem. Determine how many more pieces of candy he needs to have to give away a total of 299 pieces.

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  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

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