479-201
=479-________________1
=________________________,
=________;
25×36
=25×________×________,
=________________________,
=________;
2700÷(27×25),
=2700÷________________________,
=________________________;
=________;
98×47,
=(100________________)×47,
=100×47________________×47,
=________.
网友回答
200 - 279 - 1 278 4 9 100 × 9 900 27 ÷ 25 100 ÷ 25 4 - 2 - 2 4606
解析分析:(1)479-201,根据减法的运算性质进行简算;
(2)25×36,把36拆分为:4×9,然后运用乘法结合律进行简算;
(3)2700÷(27×25),根据除法的运算性质进行简算;
(4)98×47,转化为:(100-2)×47,再运用乘法分配律进行简算.
解答: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