• Lightbulb Students should be able to create a real-world problem situation (word problem) from a given number sentence that involves adding and subtracting two- and three-digit numbers. They must be able to model, solve their problem, and be able to explain their thinking on how they solved it.


  • You will need paper and pencil to complete the following questions. 
    a)  Create a problem situation (word problem) for the following number sentence.

                        477 + 118 - 129 = ?

    b)  Model your problem using a strip diagram, explain how you found your solution, and explain your thinking.

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  • 2.4 Number and operations. The student applies mathematical process standards to develop and use strategies and methods for whole number computations in order to solve addition and subtraction problems with efficiency and accuracy. The student is expected to:
    (D) generate and solve problem situations for a given mathematical number sentence involving addition and subtraction of whole numbers within 1,000


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