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Multiplying and Dividing Integers

Ms. Iovino. Multiplying and Dividing Integers. To Multiply and Divide Integers, We use the same set of rules. Meet the Negative Family. The negative people live in negativeland. In negativeland, you must follow the rules that are listed here. Rules to NegativeLand.

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Multiplying and Dividing Integers

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  1. Ms. Iovino Multiplying and Dividing Integers Multiplying and Dividing Integers

  2. To Multiply and Divide Integers,We use the same set of rules. Multiplying and Dividing Integers

  3. Meet the Negative Family

  4. The negative people live in negativeland. In negativeland, you must follow the rules that are listed here. Multiplying and Dividing Integers

  5. Rules to NegativeLand • There are only two things that you can do in negativeland (Shop or Math) • You can only go shopping in negativeland, if you have ONE other friend to go with. • If you don’t go shopping you stay home and do math (meaning you are in the answer).

  6. Let’s try a problem…..4 x –2= Multiplying and Dividing Integers

  7. Multiply, like you would without the negative sign.4 x 2=8How many negative signs do you see? Multiplying and Dividing Integers

  8. Does he have anyone to shop with? One negative sign……4 x –2=One negative sign represents one negativeland resident. Multiplying and Dividing Integers

  9. Nope, He doesn’t…..So he stays home in the answer.4 x –2= -8 Multiplying and Dividing Integers

  10. Try these problems….. • -5 x –3= • -8 x 3= • 10/-2= • -14/-2= • -20/5= • -3 x –4 x –1=

  11. Here are the answers….. • -5 x –3= 15 The two negative people go shopping. • -8 x 3= -24 One negative sign makes a negative answer. • 10/-2= -5 One negative sign, negative answer. • -14/-2= 7 Two negative signs cancel out. • -20/5= -4 One negative sign, negative answer. • -3 x -4 x-1= -12 Two negative signs cancel out and one is left in the answer.

  12. In conclusion, when multiplying and dividing integers, every two negative signs cancel each other out. Multiplying and Dividing Integers

  13. If you have an even number of negative signs, your answer is negative. Multiplying and Dividing Integers

  14. If you have an odd number of negative signs, your answer is positive. Multiplying and Dividing Integers

  15. Any Questions???? Multiplying and Dividing Integers

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