Question

999x8+111x28用简便方法计算？

Answer 1

简便计算是直接提取公约数111得
111x(72+28)
=111x100
=11100

Answer 2

原式=111×（9×8）+111×28
=111×72+111×28
=111×（72+28）
=11100

Answer 3

999×8+111×28

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=9×111×8+111×28

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=111×(72+28)

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=111×100

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=11100

Answer 4

答案为11100
111×9×8+111×28
=111×72+111×28
=111×（72+28）
=111×100=11100

Answer 5

999*8+111*28
=111*72+111*28
=111*（72+28）
=111*100
=11100