《数学课程标准》提出:数感主要是指关于数与数量表示、数量大小比较、数量和运算结果的估计等方面的直观感觉。培养学生数感的策略是,在教学中要用生活经验丰富数感、用动手操作体验数感、用思维分析发展数感、用技能训练强化数感。 Mathematical Curriculum Standards put forward the following: Number sense mainly refers to the intuition about the representation of number and quantity, the comparison of quantity and size, the estimation of quantity and operation result. Number of students to develop a sense of the strategy is to use life experience in teaching a sense of the number of hands-on experience to experience the number of sense, the number of sense of development to develop a sense of thinking, skills training to enhance the number of sense.