0.9+0.9+0.9+0.9改用乘法算式表示是
0.9×4
0.9×4
分析:0.9+0.9+0.9+0.9是求4個(gè)0.9相加的和,根據(jù)小數(shù)乘整數(shù)乘法的意義:小數(shù)乘整數(shù)就是求幾個(gè)相同加數(shù)和的簡(jiǎn)便運(yùn)算可知,0.9+0.9+0.9+0.9改用乘法算式表示是0.9×4.
解答:解:根據(jù)小數(shù)乘整數(shù)的乘法意義可知,
0.9+0.9+0.9+0.9改用乘法算式表示是0.9×4.
故答案為:0.9×4.
點(diǎn)評(píng):本題考查了小數(shù)乘整數(shù)的乘法意義.
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