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    精英家教网 > 小学数学 > 题目详情
    0.25×9.9=0.25×（10-1）=0.25×10-0.25．
    错误
    错误
    ．
    分析：0.25×9.9，转化为：0.25×（10-0.1），作运用乘法分配律进行简算．
    解答：解：0.25×9.9，
    =0.25×（10-0.1），
    =0.25×10-0.25×0.1，
    =2.5-0.025，
    =2.475．
    故答案为：错误．
    点评：此题考查的目的理解掌握乘法分配律的意义，并且能够灵活运用乘法分配律进行简便计算．
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