问题 解答题
我喜欢用简便方法计算.
(1)27×48+27×52
(2)125×25×4×8(3)125×(296×80)
(4)33×33+99×89(5)560÷7÷8(6)88×201-88.
答案

(1)27×48+27×52,

=27×(48+52),

=27×100,

=2700;

(2)125×25×4×8,

=(125×8)×(25×4),

=1000×100,

=100000;

(3)125×(296×80),

=125×80×296,

=10000×296,

=2960000;

(4)33×33+99×89,

=99×3+99×89,

=99×(3+89),

=99×92,

=(100-1)×92,

=100×92-1×92,

=9200-92,

=9108;

(5)560÷7÷8,

=560÷(7×8),

=560÷56,

=10;

(6)88×201-88,

=88×(201-1),

=88×200,

=17600.

单项选择题 A3/A4型题
单项选择题