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新数学《课程标准》中指出:应重视口算,加强估算,鼓励算法多样化。训练学生的口算能力,有助于提高学生深刻地理解概念,熟练地掌握各种计算法则,有助于提高学生的记忆能力,有助于提高学生全面科学的观察、分析问题的能力,可以合理地分配注意力,有助于提高学生的逻辑推理、合理计算的能力,有利于提高计算的准确性。
The new mathematics “curriculum standards” pointed out: should stress port count, strengthen the estimation, to encourage the diversity of algorithms. Training students ’numeracy skills helps to improve students’ profound understanding of concepts, to master various calculation rules skillfully, to improve students ’memory ability, to improve students’ ability of comprehensive scientific observation and problem analysis, and to be reasonable Allocation of attention, help to improve students’ logical reasoning, the ability to reasonably calculate, help to improve the accuracy of the calculation.