WARMUPS

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WARMUPS

• 1. 4(5 6 7) (5 6 7)4
• 2. 3(4 6 8 2)(21) (6 3)
• 3. 24 (3 5 6)
• 6(5 4 2)

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Multiplying Dividing Integers
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HOMEWORK

• HOMEWORK EXERCISE 152
• IF YOU CAN DO THESE YOU ARE A SUPER MATHEMATICIAN

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Multiplying and Dividing Integers is actually
very easy!
The rules are the same for both multiplication
and division.
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By the way, when you MULTIPLY two numbers, the
result is called the ___________.
product
When you DIVIDE two numbers, the result is called
the ___________.
quotient
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If both numbers you are multiplying or dividing
have the same sign, your answer will be positive!
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Both Numbers Negative
Even if both numbers are NEGATIVE, The answer is
ALWAYS...
POSITIVE!
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Try a few!
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One Number Negative One Number Positive
The answer when one number is positive and the
other negative is ALWAYS...
NEGATIVE!
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Does it matter which number is larger?
NO!
Does it matter whether the negative number comes
first or last?
NO!
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Try a few!
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Of course, you may have to multiply more than two
numbers together.
For example
If you multiply them two-at-a-time, you should
have no problem...
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So when you multiply 4 negative numbers the
product is
POSITIVE!
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If you had multiplied 3 negative numbers the
product would be
NEGATIVE!
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When you multiply an EVEN number of negative
numbers together, the answer will be...
POSITIVE!
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When you multiply an ODD number of negative
numbers together, the answer will be...
NEGATIVE!
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Does it matter how many POSITIVE numbers are
involved?
NO!
So, without doing the actual multiplication,
would the following products be positive? Or
negative?
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NEGATIVE!
POSITIVE!
You Got It!!!
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INTEGER RULES
RULE 1 ADDING, SAME SIGNS - ADD NUMBERS -
KEEP SIGNS
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INTEGER RULES
RULE 2 ADDING, DIFFERENT SIGNS - SUBTRACT
NUMBERS - KEEP SIGN OF HIGHEST
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INTEGER RULES
RULE 3 SUBTRACTING - CHANGE TO - CHANGE
SIGN OF 2ND NUMBER - USE RULE 1 OR 2
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INTEGER RULES
RULE 4 MULTIPLYING OR DIVIDING - SAME SIGN
ANSWER IS - DIFFERENT SIGN ANSWER IS -
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Multiplying Dividing Integers
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HOMEWORK

• HOMEWORK EXERCISE 153 STUDY FOR TIME TRIAL
• IF YOU CAN DO THESE YOU ARE A SUPER MATHEMATICIAN