如题所述
第1个回答 2017-05-04
99x51
=(100-1)x51
=100 x51-1 x51
=5100-51
5049
希望我的回答对您有帮助,有问题可以追问。
满意请及时采纳,谢谢!
=(100-1)x51
=100 x51-1 x51
=5100-51
5049
希望我的回答对您有帮助,有问题可以追问。
满意请及时采纳,谢谢!
第2个回答 2017-05-04
99x51
=(100-1)x51
=100x51-1x51
=5100-51
=5049
=(100-1)x51
=100x51-1x51
=5100-51
=5049
第3个回答 2017-05-04
99x51
=(100-1)x51
=100x51-1x51
=5100-51
=5049
=(100-1)x51
=100x51-1x51
=5100-51
=5049