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Variables in Real Life

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Variables in Real Life

Use each variable as described. Write an expression that matches the situation. For explanation questions, use words and examples to show your thinking.

Write Expressions with Variables

1.For the school play, Nia has s paper stars for a costume and makes 9 more. Write an expression for how many paper stars she has now.
2.Tickets to the school play cost $8 each. Let t be the number of tickets Carlos buys. Write an expression for the total cost in dollars.
3.Jamal practices the same number of lines, p, for each of 4 scenes in the play. Write an expression for the number of lines he practices altogether.
4.The drama club has $32 and spends m dollars on fabric for costumes. Write an expression for the money left, in dollars.

What Does the Variable Represent?

5.On play night, the auditorium temperature is t degrees. The exact temperature has not been measured yet. In this situation, what does t represent?
  • An unknown number whose value is not yet known
  • Any whole number from a stated set
6.Choose any whole number from 1 through 10 to be n, then calculate n + 3. Here, what does n represent?
  • An unknown number whose value is not yet known
  • Any number in a specified set
7.Invent a school-play situation involving an unknown number. Name the variable and write an expression for the situation.
8.In your own words, describe what a variable is and give one reason variables are useful in math.

Exit Ticket

9.A stack of play scripts contains b books. A stagehand adds 6 more scripts. Write an expression for the new number of scripts, then say whether b is an unknown number or can stand for any number in a set in this situation. Explain briefly.

2 printable pages

  • Variables in Real Life, page 1 of 2: Write Expressions with Variables

    Page 1

  • Variables in Real Life, page 2 of 2: What Does the Variable Represent?, Exit Ticket

    Page 2

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