问题 解答题
计算,能简算的要简算:
2.65×1.7+1.35×1.7
2.7×2-0.450.25×101.
答案

(1)2.65×1.7+1.35×1.7,

=(2.65+1.35)×1.7,

=4×1.7,

=6.8;

(2)2.7×2-0.45,

=5.4-0.45,

=4.95;

(3)0.25×101,

=0.25×(100+1),

=0.25×100+0.25×1,

=25+0.25,

=25.25.

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