题目内容
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考点:分数的四则混合运算
专题:运算顺序及法则
分析:按照混合运算的运算顺序算出结果,进一步比较得出答案即可.
解答:
解:
÷(
+
)
=
×
=
;
÷
+
÷
=
×3+
×4
=
+2
=3
;
≠3
.
所以原题错误.
故答案为:×.
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=
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| 12 |
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=
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=
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=
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| 2 |
=3
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所以原题错误.
故答案为:×.
点评:分数混合运算的关键是搞清运算顺序,正确按运算顺序计算,适当利用运算定律简算即可.
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