What is the total of my hand? How would we write this as multiplication?

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Presentation transcript:

What is the total of my hand? How would we write this as multiplication?

What is the total of my hand? How would we write this as multiplication?

Modeling with Integer Chips 3 x 4

3 x -4

-3 x 4

-3 x -4

Generate real-world situations that can be modeled by each of the following multiplication problems. a. −3 × 5 b. −6 × (−3) c. 4 × (−7)

The Rules There are only two rules to follow: –Multiplying or dividing integers with the same sign, the outcome is positive –Multiplying or dividing integers with different signs, the outcome is negative

Try Some

Closure How do we determine if the product of two signed numbers will be positive or negative? Why does the product of two negative values result in a positive value?

Exit Ticket 1. Create a real-life example that can be modeled by the expression −2 × 4, and then state the product. 2. Two integers are multiplied, and their product is a positive number. What must be true about the two integers?