# 085- class 3- lecture notes 1.1-1.2

```MTH 085 – GENERAL MATHEMATICS
CLASS 3: LECTURE NOTES – SECTION 1.2
1.1: WHOLE NUMBERS
Rounding Numbers
1. _____________________________________________________________________
2. _____________________________________________________________________
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______________________________________________________________
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______________________________________________________________
3. _____________________________________________________________________
1.2: DEFINITIONS AND PROPERTIES
Basic Math Terminology
There are four basic _____________________ in mathematics: addition, subtraction, multiplication, and
division. The written form of an operation, such as 5 +4, is called an ____________________. We also
have words for the results of the operation.
Operation
Expression
Result
MTH 085 – GENERAL MATHEMATICS
CLASS 3: LECTURE NOTES – SECTION 1.2
Types of Properties
1. Commutative: __________________________________________________________________
Examples (with numbers)
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__________________________
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_____________________________
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_____________________________
Examples(with letters)
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__________________________
2. Associative: __________________________________________________________________
Examples (with numbers)
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__________________________
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_____________________________
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_____________________________
Examples(with letters)
-
3.
__________________________
Identities: __________________________________________________________________
Examples (with numbers)
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__________________________
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_____________________________
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_____________________________
Examples(with letters)
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__________________________
4. Distributive (we will see in section 1.4)
Today’s Examples
1. Rounding
2. Identifying properties
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