题目内容

计算6×0.5÷0.5×6,下面几种说法错误的是(  )
A、6×0.5÷0.5×6=6×(0.5÷0.5)×6
B、6×0.5÷0.5×6=6×
1
2
×2×6
C、6×0.5÷0.5×6=(6×0.5)÷(0.5×6)
D、6×0.5÷0.5×6=0.5÷0.5×6×6
分析:先按照从左到右的顺序计算出6×0.5÷0.5×6的值,然后计算出选项中右边的结果,找出结果不同的即可.
解答:解:6×0.5÷0.5×6,
=3÷0.5×6,
=6×6,
=36;

A、6×(0.5÷0.5)×6,
=6×1×6,
=36;
与正确的结果相同;
B、6×
1
2
×2×6,
=3×2×6,
=6×6,
=36;
与正确的结果相同;
C、(6×0.5)÷(0.5×6),
=3÷3,
=1;
与正确的结果不同;
D、0.5÷0.5×6×6,
=1×6×6,
=36;
与正确的结果相同;
故选:C.
点评:本题要注意观察选项中的变形,看清楚是否正确的运用了简算的方法.
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