# Pre-algebra

No way, this isn't your run of the mill arithmetic. This is Pre-algebra. You're about to play with the professionals. Think of pre-algebra as a runway. You're the airplane and algebra is your sunny vacation destination. Without the runway you're not going anywhere. Seriously, the foundation for all higher mathematics is laid with many of the concepts that we will introduce to you here: negative numbers, absolute value, factors, multiples, decimals, and fractions to name a few. So buckle up and move your seat into the upright position. We're about to take off!

## Negative numbers and absolute value

- Negative number basics
- Adding and subtracting negative numbers
- Multiplying and dividing negative numbers
- Absolute value

## Factors and multiples

Understanding and finding factors and multiples. After these videos, you'll be ready for fractions.

- Divisibility tests
- Divisibility and factors
- Prime numbers
- Prime factorization
- Least common multiple
- Greatest common factor

## Decimals

- Conceptualizing decimals and place notation
- Regrouping decimals
- Decimals on a number line
- Comparing decimals
- Adding and subtracting decimals
- Multiplying decimals

## Fractions

- Understanding fractions
- Visualizing equivalent fractions
- Equivalent fractions and simplified form
- Comparing fractions
- Decomposing fractions
- Adding and subtracting fractions with unlike denominators

## Ratios, proportions, units, and rates

- Ratios and proportions
- Rates
- Unit conversion
- Metric system unit conversion
- Fahrenheit and Celsius conversion

## Applying mathematical reasoning

You already have many tools in your mathematical toolkit. In this topic, you'll use these in settings that you're likely to encounter in the real world!

- Reading and interpreting data
- Multi-step word problems
- Inequalities : Greater than and less than basics
- Cross topic arithmetic
- Number patterns
- Constructing numeric expressions

## Exponents, radicals, and scientific notation

Understanding and solving exponents without algebra.

- The world of exponents
- The square root
- The cube root
- Exponent properties
- Negative and fractional exponents
- Scientific notation

## Arithmetic properties

This tutorial will help us make sure we can go deep on arithmetic. We'll explore various ways to represent whole numbers, place value, order of operations, rounding and various other properties of arithmetic.

- Place value
- Rounding whole numbers
- Understanding whole number representations
- Regrouping whole numbers
- Counting
- Rational and irrational numbers

## Measurement

From length to area to volume to time, thinking about how we measure things.