题目内容
脱式计算:
×6× | ×× | ×+ |
- | . |
解:(1)×6×,
=4×,
=1.5;
(2)××,
=,
=;
(3)×+,
=+,
=;
(4)-,
=-,
=;
(5)-,
=,
=1;
(6),
=,
=0.3.
分析:(1)(2)按照从左到右顺序计算即可解答;
(3)(4)(5)按照先算第二级运算,再算第一级运算的顺序即可解答;
(6)按照先算括号里面的,再算括号外面的顺序即可解答.
点评:明确计算的顺序是解答本题的关键,注意计算结果要准确.
=4×,
=1.5;
(2)××,
=,
=;
(3)×+,
=+,
=;
(4)-,
=-,
=;
(5)-,
=,
=1;
(6),
=,
=0.3.
分析:(1)(2)按照从左到右顺序计算即可解答;
(3)(4)(5)按照先算第二级运算,再算第一级运算的顺序即可解答;
(6)按照先算括号里面的,再算括号外面的顺序即可解答.
点评:明确计算的顺序是解答本题的关键,注意计算结果要准确.
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