1. Multiplying and Dividing Integers

2. Multiplying Integers
If the factors have the same sign, then the product is POSITIVE.
EX. (−7)(−4) =28
If the factors have different signs, then the product is NEGATIVE.
EX. (−7)(4) =−28

3. Multiplying Integers (−3)(−4) = (6)(0.5)= (−21.1)(−0.5)= (−5)(7)(−3) =
(−8)(9)(−13)(0) =
(5)(−13)(−3)(15) =

4. Tricks Multiplying Multiple INTEGERS
When there are an ODD number of negative factors, the answer is NEGATIVE.
EX. (−3)(4)(−2)(−3) =−72
When there are an EVEN number of negative factors, the answer is POSITIVE.
EX. (−2)(−8)(3)(10) =480

5. Dividing Integers
If the dividend and divisor have the same sign, then the quotient is POSITIVE.
EX. −32 ÷ (−4) =8
If the dividend and divisor have different signs, then the quotient is NEGATIVE.
EX. −81 ÷ 9=(−9)

6. Dividing Integers −21 ÷ (−3) = −63/9 = −1 ÷ 0.8 = (−2.275)÷(−0.7)
−323÷ (−17) =

7. Rules for dividing Fractions
Change all mixed numbers to IMPROPER FRACTIONS.
Multiply the first term by the RECIPROCAL of the second term. (KEEP, CHANGE, FLIP)
Dividing Fractions: Keep, Change, Flip

9. 3/7 ÷ (-1/3)
1/4 ÷ (-2/5)
-5/6 ÷ 1/2

10. A football team loses 7 yards on each of 3 consecutive plays
A football team loses 7 yards on each of 3 consecutive plays. Find the total change in yards from where the team started.

12. Complete the Adding, Subtracting, Multiplying and Dividing Rational Numbers worksheet.
CW:

13. Integer Warp
Fruit Splat