简便计算 7200-(72×4)

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简便计算7200-(72×4)简便计算7200-(72×4)简便计算7200-(72×4)7200-(72×4)=7200-288=7200-(300-12)=7200-300+12=6900+12=

简便计算 7200-(72×4)
简便计算 7200-(72×4)

简便计算 7200-(72×4)
7200-(72×4)
=7200-288
=7200-(300-12)
=7200-300+12
=6900+12
=6912

6912

72*100-72*4
=72*(100-4)
=72*96
=6912
好像还不如直接计算来的快点,O(∩_∩)O哈哈~

(72*100)-(72*4)
=72*96
=6912

7200-288
= 7200-300+12
= 6900+12
=6912

7200-(72×4)=72×100-72×4=72×(100-4)=72×96=6912.