问题 解答题
计算,能简算的要简算.
0.32×2.5×12.53.6×0.81+0.36×1.94.05÷[1.8×(3.36-2.86)].
答案

(1)0.32×2.5×12.5,

=(4×2.5)×(12.5×0.08),

=10×1,

=10;

(2)3.6×0.81+0.36×1.9,

=0.36×8.1+0.36×1.9

=0.36×(8.1+1.9),

=0.36×10,

=3.6;

(3)4.05÷[1.8×(3.36-2.86)],

=4.05÷[1.8×(3.36-2.86)],

=4.05÷[1.8×0.5],

=4.05÷0.9,

=4.5.

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