43×58算式多样化,要巧算,递等式,要三个,三个

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43×58算式多样化,要巧算,递等式,要三个,三个
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43×58算式多样化,要巧算,递等式,要三个,三个
43×58算式多样化,要巧算,递等式,
要三个,三个

43×58算式多样化,要巧算,递等式,要三个,三个
(40+3)X(50+8)=40X50+3X50+8X40+3X8=2000+150+320+24=2494

43X58
=(50-7)x(50+7)+43
=50x50-7x7+43
=2494