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简便计算219×99和89×99十59和43+43×99

(99+1)x43

可以把后面的当成是1X43,这样子就容易理解简便方法了 99X43+43 =(99x43).+(1x43) =(99+1)x43 =100x43 =4300

43+43×99 =43x(1+99) =43x100 =4300 祝天天向上。

43×99 =43x(100-1) =43x100-43x1 =4300-43 =4257 祝学习进步。

=43x(99+1) =43*100 =4300

99x43+43 =(99+1)x43 =100×43 =4300

=43×(99+1) =43×100 =4300

56×43+43×43的简便计算 解答 56×43+43×43 =43× (56+43) =43×(100_1) =4300-43 =4257

①43×99 =43×(100-1)=43×100-43×1=4300-43=4257; ②45×28+55×28 =(45+55)×28=100×28=2800; ③75×16=75×2×8=150×8=1200.

=43x(75+26-1) =43x100=4300

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