问题 填空题

479-201

=479-____________1

=__________________,

=______;

25×36

=25×______×______,

=__________________,

=______;

2700÷(27×25),

=2700÷__________________,

=__________________;

=______;

98×47,

=(100____________)×47,

=100×47____________×47,

=______.

答案

479-201

=479-200-1

=279-1,

=278;

25×36

=25×4×9,

=100×9,

=900;

2700÷(27×25),

=2700÷27÷25,

=100÷25;

=4;

98×47,

=(100-2)×47,

=100×47-2×47,

=4606.故答案为:(1)200、-、279、-、1、278;

(2)4、9、100、9、900;

(3)27、÷、25、100、÷、25、4;

(4)-、2、-2、4606;

单项选择题
单项选择题