问题 填空题

4.6+6.92+5.4=4.6+______+6.92

(25+80)×4=4×______+4×______.

答案

(1)4.6+6.92+5.4,

=4.6+5.4+6.92,

=(4.6+5.4)+6.92,

=10+6.92,

=16.92;

(2)(25+80)×4,

=4×25+4×80,

=100+320,

=420.

故答案为:5.4,25,80.

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