"全日制义务教育数学课程标准"明确指出:要重视口算,加强估算,提倡算法多样性。培养学生的口算、估算、速算意识,对发展学生的计算能力,让学生拥有良好的数感,有非常重要的意义。本套丛书遵循新课标理念,紧扣"人教版"新课标教学教材,将口算、速算、估算练习与教材内容有机结合,为提高学生的计算能力提供了良好的训练。
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