The document discusses the rules for multiplying and dividing integers. It states that when multiplying or dividing integers with the same sign, the answer is positive, and when the signs are different, the answer is negative. It provides examples like -5 x -7 = positive and -6 x 9 = negative. It also includes a song to help remember the rules for sign placement in integer multiplication.

1. Multiplying and Dividing Integers Mrs. Young EMC 1

2. Rules When multiplying and dividing integers there are two rules: When multiplying or dividing integers that have the SAME sign, the answer is POSITIVE . Positive x positive = positive Negative x negative = positive +7 x +12 = +84 -6 x –5 = +30

3. Rules continued… Rule 2: When multiplying or dividing integers whose signs are DIFFERENT , the answer will always be NEGATIVE . Positive x negative = negative Negative x positive = negative +8 x –4 = -32 -5 x +7 = -35

4. Let’s Sing a Song! Multiplying Integers Song (sing to “Dead Bones” tune) Verse 1 A negative times a negative is a, (um) positive A negative times a positive is a, (um) negative A negative times a negative is a, (um) positive These are the rules for signs. Verse 2 If you have the same signs, you get a positive, But if they’re different, you get a negative, If you have the same signs, you get a positive, Yes, these are the rules for signs.

5. Let’s Practice! What sign would the answer have in front of the integer??? -5 x -7 = ???

6. POSITIVE!!!

7. How about… -6 x 9 = ??? What sign will be in front of the answer??

8. NEGATIVE!!!

9. Try this one! What sign will be in front of the answer??? -81 ÷ +9 = ???

10. NEGATIVE!!!

11. Let’s solve some problems! -8 x –9 =

12. +72

13. +4 x +12 =

14. +48

15. -45 ÷ +5 =

16. -9

17. -63 ÷ +7 =

18. -9

19. -8 x –11 =

20. +88

21. Remember… When multiplying and dividing integers: Same signs = a positive Different signs = a negative