35×80=35×2×40=2800.
正確
正確
分析:根據(jù)題意,把80拆成2×40,然后再根據(jù)乘法結(jié)合律進行簡算即可.
解答:解:35×80,
=35×(2×40),
=(35×2)×40,
=70×40,
=2800.
所以,35×80=35×2×40=2800是正確的,
故答案為:正確.
點評:本題主要考查乘法交換律的應用,然后再根據(jù)題意進一步解答即可.
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