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The study of numbers, especially the properties of the traditional operations on them—addition, subtraction, multiplication and division.

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Expansion of Numbers and Operations

(1) Natural numbers are closed under addition. (2) Subtraction is the inverse operation of addition. l + m = n , n - m = l Define negative integers then integers are closed under subtraction. (3) Multiplication is repeated addition. p + p + p = p × 3 p ...

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(1) Natural numbers are closed under addition. (2) Subtraction is the inverse operation of addition. l + m = n , n - m = l Define negative integers then integers are closed under subtraction. (3) Multiplication is repeated addition. p + p + p = p × 3 p ...

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01 Introduction to Mathematics

○ Many students wonder why it's even necessary to learn in the first place. ○ How social media knows who you're going to tag in a photo before you do.

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○ Many students wonder why it's even necessary to learn in the first place. ○ How social media knows who you're going to tag in a photo before you do.

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02 Addition and Subtraction

despise, inventory, anthropology, conceptualization, vendor, commutative, associative

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despise, inventory, anthropology, conceptualization, vendor, commutative, associative

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05 Large Whole Numbers: Place Values and Estimating

Large Whole Numbers: Place Values and Estimating

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Large Whole Numbers: Place Values and Estimating

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08 Converting Between Fractions, Decimals, and Percentages

Converting Between Fractions, Decimals, and Percentages

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Converting Between Fractions, Decimals, and Percentages

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16 Divisibility, Prime Numbers, and Prime Factorization

The fundamental theorem of arithmetic: there is only one unique set of prime factors for any number.

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The fundamental theorem of arithmetic: there is only one unique set of prime factors for any number.

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20 Intro To Exponents (aka Indices)

Multiplication shows repeated addition and exponents show repeated multiplication.

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Multiplication shows repeated addition and exponents show repeated multiplication.

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21 Analyzing Sets of Data: Range, Mean, Median, and Mode

The median and the mode dilute the impact of anomalous data.

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The median and the mode dilute the impact of anomalous data.

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