advertisement

MTH 085 – GENERAL MATHEMATICS CLASS 3: LECTURE NOTES – SECTION 1.2 1.1: WHOLE NUMBERS Rounding Numbers 1. _____________________________________________________________________ 2. _____________________________________________________________________ ______________________________________________________________ ______________________________________________________________ 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) - __________________________ - _____________________________ - _____________________________ Examples(with letters) - __________________________ 2. Associative: __________________________________________________________________ Examples (with numbers) - __________________________ - _____________________________ - _____________________________ Examples(with letters) - 3. __________________________ Identities: __________________________________________________________________ Examples (with numbers) - __________________________ - _____________________________ - _____________________________ Examples(with letters) - __________________________ 4. Distributive (we will see in section 1.4) Today’s Examples 1. Rounding 2. Identifying properties