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Chapter 01Basic Math

0101.01Addition, Subtraction, Multiplication, and Division
0201.02Exponents and Roots
0301.03Rates, Ratios, and Proportions
0401.04Percentages
0501.05Variables and Expressions
0601.06Equations and Inequalities
0701.07Graphing
0801.08Sets
0901.09Number Systems
- Natural Numbers
- Integers
- Rational Numbers
- Real Numbers
- Complex Numbers
1001.10Intervals
1101.11Angles
1201.12Planar Shapes

Chapter 01 · Basic Math

0101.01Addition, Subtraction, Multiplication, and Division
0201.02Exponents and Roots
0301.03Rates, Ratios, and Proportions
0401.04Percentages
0501.05Variables and Expressions
0601.06Equations and Inequalities
0701.07Graphing
0801.08Sets
0901.09Number Systems
- Natural Numbers
- Integers
- Rational Numbers
- Real Numbers
- Complex Numbers
1001.10Intervals
1101.11Angles
1201.12Planar Shapes

Topics / 01 Basic Math

01.09

Number Systems

From counting numbers to complex numbers: each number system fills a gap in the one before.

About 15 minutes

You'll learn to

→Classify numbers as natural, integer, rational, irrational, real or complex
→Write a repeating decimal as a fraction
→Add and multiply complex numbers

← 01.08 Sets 01.10 Intervals →

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