479-201=479-________________1=________________________,=________;25×36=25×________×

发布时间:2020-08-10 09:57:01

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
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