问题 解答题
脱式计算.
50.4÷3.2×2.08204÷(3.4×0.5)(43.26+2.34)÷7.5(20-0.8×9)×5.7.
答案

(1)50.4÷3.2×2.08,

=15.75×2.08,

=32.76;

(2)204÷(3.4×0.5),

=204÷1.7,

=120;

(3)(43.26+2.34)÷7.5,

=45.6÷75,

=6.08;

(4)(20-0.8×9)×5.7,

=(20-7.2)×5.7,

=12.8×5.7,

=72.96.

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