美国学者Sauble指出:“心算和估计……激发了对基本原理和数字关系更为成熟的理解能力的发展。能成功估算的学生不总是使用已指定的标准化思想模式。这些学生在处理数字时非常灵活,善于随机应变。”在小学阶段重视学生估算能力的培养,不仅可以使学生思维灵活,而且对于学生直觉思维能力的培养也会有一定的帮 American scholar Sauble states: “Mental arithmetic and estimation ... have stimulated the development of more mature understanding of fundamentals and numbers.” Students who successfully estimate do not always use the normative model of thought that they have been assigned to. Very flexible, good at adaptability. "At the primary stage emphasis on students ’ability to estimate, not only can make students thinking flexible, but also for the training of students’ intuition thinking ability will have some help