问题 解答题
怎样简便就怎样算.
(1)8×6.05-8×3.05(2)10.15-10.08÷1.4
(3)101×0.42
(4)1.08÷4.5÷0.2
(5)1.5×30.2-7.26÷0.4.
答案

(1)8×6.05-8×3.05,

=8×(6.05-3.05),

=8×3,

=24;

(2)10.15-10.08÷1.4,

=10.15-7.2,

=2.95;

(3)101×0.42,

=(100+1)×0.42,

=100×0.42+1×0.42,

=42+0.42,

=42.42;

(4)1.08÷4.5÷0.2,

=1.08÷(4.5×0.2),

=1.08÷0.9,

=1.2;

(5)1.5×30.2-7.26÷0.4,

=45.3-18.15,

=27.15.

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