56×99的简便运算怎么做?今天答复,快,

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56×99的简便运算怎么做?今天答复,快,56×99的简便运算怎么做?今天答复,快,56×99的简便运算怎么做?今天答复,快,56×99=56×(100-1)=56×100-56=5600-56=55

56×99的简便运算怎么做?今天答复,快,
56×99的简便运算怎么做?
今天答复,快,

56×99的简便运算怎么做?今天答复,快,
56×99
=56×(100-1)
=56×100-56
=5600-56
=5544

56×(100-1)=5600-56=5544

56*100-56*1

看成56*100-56等于5544

56*99=56*(100-1)=56*100-56*1=5600-56=5544

=56X(100-1)
=56X100-56X1
=5600-56
=5544

56×(100-1)==56×100-56×1=5600-56=5544

56*(100-1)=56*100-56=5600-56=5544

56乘(100-1)
=56乘100-56乘1
=5600-56
=5544