问题 解答题
能简算的要简算:
19.28+1.82÷0.7
10.56×3.75-3.75×0.56(71.2-71.2×0.9)÷0.25
14.53-(2.64+0.53)-1.3613.5÷[(2-0.8)×4.5][(6.1-4.6)÷0.8-1]÷0.4.
答案

(1)19.28+1.82÷0.7,

=19.28+2.6,

=21.88;

(2)10.56×3.75-3.75×0.56,

=(10.56-0.56)×3.75,

=10×3.75,

=37.5;

(3)(71.2-71.2×0.9)÷0.25,

=(1-0.9)×71.2÷

1
4

=7.12×4,

=28.48;

(4)14.53-(2.64+0.53)-1.36,

=(14.53-0.53)-(2.64+1.36),

=14-4,

=10;

(5)13.5÷[(2-0.8)×4.5],

=13.5÷4.5÷1.2,

=3÷1.2,

=2.5;

(6)[(6.1-4.6)÷0.8-1]÷0.4,

=[1.5÷0.8-1]÷0.4,

=[1.875-1]÷0.4,

=0.875÷0.4,

=2.1875.

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