Presentation is loading. Please wait.

Presentation is loading. Please wait.

Multiplying and Dividing Integers

Similar presentations


Presentation on theme: "Multiplying and Dividing Integers"— Presentation transcript:

1 Multiplying and Dividing Integers

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: Positive x negative = negative
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 What sign will be in front of the answer??
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


Download ppt "Multiplying and Dividing Integers"

Similar presentations


Ads by Google