This book presents 52 different types of Olympiad math problems, step-by-step analysis and solutions to enhance the math skill and cultivate the logical thinking habit for 4th to 8th grade students. Several exercises are provided for each problem to enhance the understanding. Reference answers for exercises are added in V2.0If you are looking for a collection of problems to teach students or for your kids to practice at home, you can also buy "Math Olympiad Problems":Thank youCheney Gao