722*0.36+22*9.64+702*0.64如何用简便方法计算
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722×0.36+22×9.64+702×0.64
=722×0.36+702×0.64+22×9.64
=722×0.36+(722-20)×0.64+22×(0.64+9)
=722×0.36+722×0.64-20×0.64+22×0.64+22×9
=722×(0.36+0.64)+(22-20)×0.64+198
=722×1+2×0.64+198
=722+1.28+198
=722+198+1.28
=920+1.28
=921.28
=722×0.36+702×0.64+22×9.64
=722×0.36+(722-20)×0.64+22×(0.64+9)
=722×0.36+722×0.64-20×0.64+22×0.64+22×9
=722×(0.36+0.64)+(22-20)×0.64+198
=722×1+2×0.64+198
=722+1.28+198
=722+198+1.28
=920+1.28
=921.28
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722*0.36+22*9.64+702*0.64
=722*0.36+22*10-22*0.36+702*0.64
=0.36*(722-22)+220+700*0.64+2*0.64
=0.36*700+220+700*.64+1.28
=700*(0.36+0.64)+221.28
=700×1+221.28
=921.28
=722*0.36+22*10-22*0.36+702*0.64
=0.36*(722-22)+220+700*0.64+2*0.64
=0.36*700+220+700*.64+1.28
=700*(0.36+0.64)+221.28
=700×1+221.28
=921.28
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722×0.36+22×9.64+702×0.64
=(702+22)×0.36+22×9.64+702×0.64
=702×0.36+22×0.36+22×9.64+702×0.64
=702×(0.36+0.64)+22×(0.36+9.64)
=702×1+22×10
=702+220
=922
=(702+22)×0.36+22×9.64+702×0.64
=702×0.36+22×0.36+22×9.64+702×0.64
=702×(0.36+0.64)+22×(0.36+9.64)
=702×1+22×10
=702+220
=922
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702x0.36+22x0.36+22x9.64+702x0.64
=702x(0.36+0.64)+22x(0.36+9.64)
=702+220
=922
=702x(0.36+0.64)+22x(0.36+9.64)
=702+220
=922
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722*0.36+22*9.64+702*0.64=722*(1-0.64)+22*(9+0.64)+702*0.64=722+22*9+(22+702-722)*0.64=920+0.64*2=921.28
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