# Math Challenge I-A Textbooks

Please see the sections below for answer keys, topics covered, and sample problems for each of the MC I-A textbooks.

### Pre-Algebra/Word Problems

The answer key for MC I-A Pre-Algebra and Word Problems is available by clicking here.

#### Chapter Topics

- Ratios and Proportions
- Ratios and Percentages
- Sums, Differences, and Multiples
- Chickens and Rabbits
- Extending Chickens and Rabbits
- Motion Problems
- Problem Solving with Motion
- Work Problems
- Problem Solving with Work
- Math Contest Review

#### Sample Questions

### Geometry

The answer key for MC I-A Geometry is available by clicking here.

#### Chapter Topics

- Counting Through Patterns
- Measurements
- Dance with Angles
- Magic In Triangles
- You Are Special, Right?
- Angles Are Special Too
- Area of Polygons
- Cool Areas
- Circle Around
- Math Contest Review

#### Sample Questions

### Counting & Probability

The answer key for MC I-A Counting and Probability is available by clicking here.

#### Chapter Topics

- The Sum Rule: Intro to Counting
- The Product Rule
- Does Order Matter? Permutations and Combinations
- Counting Strategies: Grouping and Spacing
- Counting Strategies: Stars and Bars
- Venn Diagrams and Sets
- Patterns and Sequences
- What is the Chance? (Probability)
- Probability and Statistics
- Math Contest Review

#### Sample Questions

### Number Theory

The answer key for MC I-A Number Theory is available by clicking here.

#### Chapter Topics

- Number Sense and Place Values
- Primes and Factors
- Problem Solving with Primes and Factors
- Divisibility Fundamentals
- Problem Solving with Divisibility
- Fundamentals of GCD's and LCM's
- Problem Solving using GCD's and LCM's
- Remainders and Modular Arithmetic
- Word Problems with Modular Arithmetic
- Math Contest Review

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