
14x53+43x147怎样简便算?
4个回答
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14x53+43x147
=742+4300+43×47
=742+4300+2021
=7063.
=742+4300+43×47
=742+4300+2021
=7063.
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14x53+43x147
=7x2x53+43x7x3x7
=7x(106+906)
=7x1012
=1648
=7x2x53+43x7x3x7
=7x(106+906)
=7x1012
=1648
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2020-04-09
展开全部
14x53+43x147
=14x53+(14+29)x147
=14x53+14x147+29x147
=14x(53+147)+29x147
=14x200+29x147
=14x200+29x(140+7)
=14x200+29x140+29x7
=14x(200+290)+29x7
=14x490+29x7
=7x980+29x7
=7x1009
=7x1000+7x9
=7000+63
=7063
望题主采纳!
=14x53+(14+29)x147
=14x53+14x147+29x147
=14x(53+147)+29x147
=14x200+29x147
=14x200+29x(140+7)
=14x200+29x140+29x7
=14x(200+290)+29x7
=14x490+29x7
=7x980+29x7
=7x1009
=7x1000+7x9
=7000+63
=7063
望题主采纳!
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