(203一56)÷7的简便运算
(203一56)÷7的简便运算
=203÷7-56÷7
=29-8
=21
=203÷7-56÷7
=29-8
=21
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第1个回答 2017-05-26
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第2个回答 2017-05-26
(203-56)÷7
=203÷7-56÷7
=29-8
=21
=203÷7-56÷7
=29-8
=21
第3个回答 2017-05-26
(203-56)/7=(210-7-56)/7
=(210/7)-(7/7)-(56/7)
=30-1-8=21.
或
(203-56)/7=(140+63-56)/7
=(140/7)+(63/7)-(56/7)
=20+9-8=21.
=(210/7)-(7/7)-(56/7)
=30-1-8=21.
或
(203-56)/7=(140+63-56)/7
=(140/7)+(63/7)-(56/7)
=20+9-8=21.