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    精英家教网 > 小学数学 > 题目详情

    1.7________0.2=0.05________30．

    -    ×
    分析：解答此题要通过观察数的特点来进行，先看等号右边，若填“÷、-、+”，不论等号右边填任何符号，两边得数都不可能相等，所以右边应填“×”，则0.05×30=1.5，故等号左边应填“-”．
    解答：1.7-0.2=0.05×30．
    故答案为：-，×．
    点评：此题是考查对运算符号的具体运用情况，以及对小数四则混合运算计算方法的掌握情况．
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