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3.52×3=3.52
+
+
3.52
+
+
3.52.
分析:3.52×3表示3个3.52相加.
解答:解:3.52×3=3.52+3.52+3.52;
故答案为:+,+.
点评:本题考查了小数乘法的意义.
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