6.8×3.5÷6.8×3.5=1
×
×
.(判斷對錯)
分析:在計算6.8×3.5÷6.8×3.5時,可調整一下運算順序,使計算簡便,即原式=6.8÷6.8×3.5×3.5,而原式?jīng)]有很好掌握運算順序,導致出錯.
解答:解:6.8×3.5÷6.8×3.5
=6.8÷6.8×3.5×3.5
=1×3.5×3.5
=12.25
故答案為:×.
點評:此題主要考查小數(shù)四則混合運算的順序.
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