0.75+0.75+0.75+0.75=
0.75
0.75
×
4
4
=
3
3
．
分析：根據(jù)題意，4個(gè)0.75相加的和是多少，用0.75×4，然后再進(jìn)一步解答即可．
解答：解：0.75+0.75+0.75+0.75=0.75×4=3．
故答案為：0.75，4，3．
點(diǎn)評(píng)：本題主要考查小數(shù)乘整數(shù)的意義，與整數(shù)乘法的意義相同，表示求幾個(gè)相同加數(shù)和的簡(jiǎn)便計(jì)算．
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