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;