分析:本題先把25
改寫成(25+
),然后運用乘法的分配律進行計算,25×4+4×
=100+
=100
,這樣使計算更為簡便.
解答:解:25
×4,
=(25+
)×4,
=25×4+4×
,
=100+
,
=100
.
點評:本題運用乘法的分配律計算使計算的過程變的簡單,正確率更高.
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