问题 填空题

①18.25+6.2+1.75=6.2+(______+______).

②19.2-6.8-3.2=(______)-(______+______)

答案

(1)18.25+6.2+1.75,

=6.2+(18.25+1.75);

(2)19.2-6.8-3.2,

=19.2-(6.8+3.2);

故答案为:18.25,1.75,19.2,6.8,3.2.

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