问题 解答题
(1)5.63×6.34+0.563×36.6=______;
(2)1240×3.8+124×63-12.4×10=______;
(3)已知B=
0.00…08
1992个0
A=
0.00…025
1992个0
,那么A×B=______;
(4)已知△÷△=□△+△=○△-△=☆□+○+☆=11.4,那么:△=______.
答案

(1)5.63×6.34+0.563×36.6,

=56.3×0.634+56.3×0.366,

=56.3×(0.634+0.366),

=56.3;

(2)1240×3.8+124×63-12.4×10,

=1240×3.8+1240×6.3-1240×0.1,

=1240×(3.8+6.3-0.1),

=1240×10,

=12400;

(3)

0.00…025
1992个0
×
0.00…08
1992个0

=

=

(4))□+〇+☆,

=△÷△+△+△+△-△,

=1+2△,

=11.4,

所以2△=10.4,因此△=5.2;

故答案为:56.3,12400,,5.2.

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