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Introduction to Mathematics

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ARITHMETIC

The four basic arithmetical operations

Lesson

Order of operations

Rounding and estimates

MULTIPLICATION

Multiplication with negative numbers

Multiplication with decimal numbers

Multiplication with fractions

DIVISION

Multiplication and division by 10

Divisibility

Division with fractions

Division with negative numbers

Division with decimal numbers

NEGATIVE NUMBERS

Introduction to negative numbers

Addition and subtraction with negative numbers

NUMBER SYSTEMS

The positional system with base 10

Rational numbers

MEASUREMENTS AND UNITS

SI units

Prefixes

Common measurement units and conversions

Weight, mass, and volume

Measurements: Density

Time: Calculations around the clock

CALCULATIONS AND METHODS

FRACTIONS

Fractions and decimals

Expanding and reducing fractions: Introduction

Expanding and simplifying fractions: More examples

Comparing fractions with different denominators

The lowest common denominator

PRIME NUMBERS AND FACTORISATION

Prime numbers: Rectangular numbers

Prime numbers: Factorisation

EXPONENTS AND ROOTS

Introduction to exponents

Powers of ten

Scientific notation

Square roots