问题 解答题
怎样算简便就怎样算.
6.71×0.52+4.8×0.6712.5×(3.5-1.65)×0.4102×4.5
6.25÷1.25÷0.88.3-2.63+2.73×1.5.
答案

(1)6.71×0.52+4.8×0.671,

=6.71×0.52+0.48×6.71,

=6.71×(0.52+0.48),

=6.71×1,

=6.71;

(2)2.5×(3.5-1.65)×0.4,

=2.5×1.85×0.4,

=2.5×0.4×1.85,

=1×1.85,

=1.85;

(3)102×4.5,

=(100+2)×4.5,

=100×4.5+2×4.5,

=450+9,

=459;

(4)6.25÷1.25÷0.8,

=6.25÷(1.25×0.8),

=6.25÷1,

=6.25;

(5)8.3-2.63+2.73×1.5,

=8.3-2.63+4.095,

=5.67+4.095,

=9.765.

单项选择题
单项选择题