题目内容
1.2×2.5+0.8×2.5=（________+________）×________．
1.2 0.8 2.5
分析：1.2×2.5+0.8×2.5，运用乘法分配律进行简算．
解答：1.2×2.5+0.8×2.5，
=（1.2+0.8）×2.5，
=2×2.5，
=5；
故答案为：1.2、0.8、2.5．
点评：此题考查的目的是理解乘法分配律的意义，并且能够灵活运用乘法分配律进行简便计算．
分析：1.2×2.5+0.8×2.5，运用乘法分配律进行简算．
解答：1.2×2.5+0.8×2.5，
=（1.2+0.8）×2.5，
=2×2.5，
=5；
故答案为：1.2、0.8、2.5．
点评：此题考查的目的是理解乘法分配律的意义，并且能够灵活运用乘法分配律进行简便计算．
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