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Integers and real numbers
9/7/11
Whole Numbers: 0,1,2,3,4,…
Integers: Whole numbers and their opposites.
…-2,-1,0,1,2,…
9-8-11
Addends: Numbers that are added together
Absolute Value: Distance from zero
Sum: The answer to an addition problem
Addend + Addend = Sum
Rules for addition:
positive + positive = positive
negative + negative = negative
positive + negative = positive or negative depending on the
addend with the greater absolute value.
9-9-11
Difference – The answer to a subtraction problem.
Rule for subtraction:
To subtract a number you add the opposite
9-12-11
Product: The answer to a multiplication problem.
Factors: Numbers that are multiplied together.
Factor x Factor = Product
Rules for multiplication:
positive X positive = positive
negative X negative = positive
positive X negative = negative
When there is an even number of negative factors, the product is positive.
When there is an odd number of negative factors, the product is negative.