题目内容
= | = |
÷()×= | = |
解:,
=÷[×],
=[],
=,
=;
,
=÷[-],
=,
=0.5;
÷()×,
=÷×,
=×,
=2.25;
,
=20-[]×,
=20-1×,
=20-1.2,
=18.8,
故答案为:,0.5,2.25,18.8.
分析:依据四则运算顺序:先算第二级运算,再算第一级运算,如果只含有同一级运算,按照从左到右顺序就是,有括号先算括号里面的顺序即可解答.
点评:依据四则运算顺序正确进行计算是本题考查知识点,关键是计算结果要准确.
=÷[×],
=[],
=,
=;
,
=÷[-],
=,
=0.5;
÷()×,
=÷×,
=×,
=2.25;
,
=20-[]×,
=20-1×,
=20-1.2,
=18.8,
故答案为:,0.5,2.25,18.8.
分析:依据四则运算顺序:先算第二级运算,再算第一级运算,如果只含有同一级运算,按照从左到右顺序就是,有括号先算括号里面的顺序即可解答.
点评:依据四则运算顺序正确进行计算是本题考查知识点,关键是计算结果要准确.
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