一定要简便算,不简便不行!!!!!!!!!!!!!
我急用啊!!!!!!!!!!!!
快啊!!!!!!!!
76*100-76*2
36*100+36*2
这样算简不简便?
36*100+36*2
这样算简不简便?
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第1个回答 2007-04-17
76*98
=76*(100-2)
=76*100-76*2
=7600-152
=7448
36*102
=36*(100+2)
=36*100+36*2
=3600+72
=3672
=76*(100-2)
=76*100-76*2
=7600-152
=7448
36*102
=36*(100+2)
=36*100+36*2
=3600+72
=3672
第2个回答 2007-04-17
76*(100-2)
36*(100+2)
36*(100+2)