海外直订MATHadazzles Mindstretch Puzzles: Reasoning with Integers Volume 3 MATHadazzles Mindstretch

海外直订MATHadazzles Junior Volume 2: Reasoning with Numbers MATHadazzles初级卷2:用数字推理

海外直订MATHadazzles Volume 8: Reasoning Algebraically with Decimals MATHadazzles卷8:用小数进行代数推理

海外直订MATHadazzles Junior Volume 1: Reasoning with Numbers MATHadazzles初级卷1:用数字推理