# Math Challenge I-B Textbooks

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

### Pre-Algebra/Word Problems

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

#### Chapter Topics

1. Ratios and Percentages
2. Sums, Differences, and Multiples
3. Chickens and Rabbits
4. Extending Chickens and Rabbits
5. Motion
6. Problem Solving with Motion
7. Work
8. Problem Solving with Work
9. Linear Equations
10. Math Contest Review

### Geometry

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

#### Chapter Topics

1. Counting Through Patterns
2. Problem Solving with Measurements
3. Magic In Triangles
4. You Are Special, Right?
5. Angles Are Special Too
6. Area of Polygons
7. Cool Areas
8. Circle Around
9. Circle Back
10. Math Contest Review

### Counting & Probability

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

#### Chapter Topics

1. The Sum Rule: Intro to Counting
2. The Product Rule
3. Does Order Matter? Permutations and Combinations
4. Counting Strategies: Grouping and Spacing
5. Counting Strategies: Stars and Bars
6. Venn Diagrams and Sets
7. Patterns and Sequences
8. What are the Chances? (Probability)
9. Probability and Statistics
10. Math Contest Review

### Number Theory

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

#### Chapter Topics

1. Place Values and Calculation Tricks
2. Building Blocks: Primes and Factors
3. Problem Solving with Primes and Factors
4. Divisibility Fundamentals
5. Problem Solving with Divisibility
6. Fundamentals of GCD's and LCM's
7. Problem Solving using GCD's and LCM's
8. Remainders and Modular Arithmetic
9. Word Problems with Modular Arithmetic
10. Math Contest Review