# Pre-algebra Math Mission

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The **Pre-algebra Math Mission** is a set of skills on Khan Academy. This mission consists of foundational material and then proceeds into many topics.

## Mission Specifics

### Negative numbers and absolute value

- Negative numbers on the number line
- Negative numbers on the number line without reference to zero
- Ordering small negative numbers
- Number opposites
- Adding negative numbers
- Subtracting negative numbers
- Interpreting negative numbers
- Multiplying and dividing negative numbers
- Finding absolute values
- Comparing absolute values
- Interpreting absolute value
- Absolute value to find distance 2

### Factors and multiples

- Divisibility tests
- Divisibility intuition
- Factor pairs
- Identifying factors and multiples
- Prime numbers
- Composite numbers
- Prime factorization
- The fundamental theorem of arithmetic
- Divisibility
- Least common multiple
- Greatest common factor
- GCF and LCM word problems

### Decimals

- Writing and interpreting decimals
- Comparing decimal place value
- Money and decimal place value intuition
- Regrouping decimals
- Decimals on the number line 1
- Decimals on the number line 2
- Decimals on the number line 3
- Comparing decimals (tenths, hundredths, and thousandths)
- Ordering decimals
- Adding decimals (tenths)
- Adding decimals 1
- Adding decimals 2
- Subtracting decimals 0.5
- Subtracting decimals
- Subtracting decimals 2
- Adding and subtracting decimals word problems
- Multiplying decimals 1
- Multiplying decimals 2
- Dividing completely
- Dividing decimals 1
- Dividing decimals 2
- Dividing decimals 3
- Dividing decimals 4
- Converting fractions to decimals
- Rewriting decimals as fractions
- Rewriting decimals as fractions 2
- Converting decimals to percents
- Converting percents to decimals
- Finding percents
- Discount, tax, and tip word problems
- Markup and commission word problems
- Rounding decimals
- Significant figures
- Rewriting fractions as decimals
- Understanding moving the decimal
- Adding and subtracting negative fractions, decimals, and percents

### Fractions

- Recognizing fractions 1
- Identifying numerators and denominators
- Fractions on the number line
- Equivalent fractions introduction
- Simplifying fractions
- Equivalent fractions
- Equivalent fractions 2
- Comparing fractions with the same numerator or denominator
- Comparing fractions with different numerators and denominators
- Ordering fractions
- Decomposing fractions
- Adding fractions with 10 and 100 as denominators
- Adding fractions with unlike denominators
- Subtracting fractions with unlike denominators
- Adding and subtracting negative fractions
- Adding fractions with common denominators
- Subtracting fractions with common denominators
- Adding and subtracting fractions with like denominators word problems
- Adding and subtracting fractions with unlike denominators word problems
- Multiplying fractions by whole numbers
- Multiplying positive fractions
- Multiplying positive and negative fractions
- Fraction multiplication as scaling
- Multiplying fractions and whole numbers word problems
- Multiplying fractions by fractions word problems
- Converting mixed numbers and improper fractions
- Unit fractions on the number line
- Comparing fractions and mixed numbers
- Fractions cut and copy 2
- Rational numbers on the number line
- Adding and subtracting mixed numbers with like denominators 1
- Adding and subtracting mixed numbers with unlike denominators
- Multiplying mixed numbers
- Converting fractions to decimals
- Rewriting decimals as fractions
- Rewriting decimals as fractions 2
- Writing fractions as repeating decimals
- Understanding fractions as division
- Dividing unit fractions by whole numbers
- Dividing whole numbers by unit fractions
- Division with fractions and whole numbers word problems
- Understanding dividing fractions by fractions
- Dividing fractions
- Dividing fractions by fractions and whole numbers applications
- Dividing positive and negative fractions

### Ratios, proportions, units, and rates

### Applying mathematical reasoning

- Reading stem and leaf plots
- Reading pictographs 1
- Reading pictographs 2
- Reading bar charts 1
- Creating bar charts
- Reading bar charts 2
- Reading bar charts 3
- Multi-step rational number word problems
- Comparing two-digit numbers
- Writing numerical inequalities
- Writing inequalities to describe real-world situations
- Inequalities on a number line
- Math patterns 2
- Visualizing and interpreting relationships between patterns
- Evaluating expressions with parentheses
- Translating expressions with parentheses
- Creating expressions with parentheses

### Exponents, radicals, and scientific notation

- Exponents
- Whole number exponents with integer bases 2
- Square roots of perfect squares
- Approximating square roots
- Simplifying square roots
- Simplifying square roots 2
- Adding and subtracting radicals
- Cube roots
- Cube roots 2
- Using exponent rules to evaluate expressions
- Properties of exponents
- Positive and negative exponents
- Scientific notation intuition
- Scientific notation
- Multiplication and division with powers of ten
- Multiplying and dividing scientific notation
- Computing in scientific notation

### Arithmetic properties

- Place value
- Understanding place value
- Rounding whole numbers
- Understanding whole number representations
- Regrouping whole numbers
- Recognizing rational and irrational numbers
- Comparing irrational numbers with a calculator
- Order of operations
- Order of operations with negative numbers
- Distributive property

### Measurement

- Measuring area with unit squares
- Area problems
- Perimeter 1
- Finding perimeter
- Volume with unit cubes 1
- Volume 1
- Volume word problems

Users can view the other Math Missions here.