问题 解答题
递等式计算(能简便的要简便计算)
1.25×3.2×0.8
14.5×1024.7×4.7+4.7+4.7×4.3
9.6÷0.4×0.258.68-8.68÷0.56×0.529.7÷(5.85÷0.65)
答案

(1)1.25×3.2×0.8,

=1.25×0.8×3.2,

=1×3.2,

=3.2;

(2)14.5×102,

=14.5×(100+2),

=14.5×100+14.5×2,

=1450+29,

=1479;

(3)4.7×4.7+4.7+4.7×4.3,

=4.7×(4.7+1+4.3),

=4.7×10,

=47;

(4)9.6÷0.4×0.25,

=24×0.25,

=6×(4×0.25),

=6×1,

=6;

(5)8.68-8.68÷0.56×0.5,

=8.68-15.5×0.5,

=8.68-7.75,

=0.93;

(6)29.7÷(5.85÷0.65),

=29.7÷9,

=3.3.

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