再问四道题(脱式计算) 100×0.83+83×99 4.7×63+3.7×47 3.6x + 2.4 x =0.36 5(x-3.1)=15.5再问四道题(脱式计算)100×0.83+83×99 4.7×63+3.7×473.6x + 2.4 x =0.36 5(x-3.1)=15.5

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再问四道题(脱式计算)100×0.83+83×994.7×63+3.7×473.6x+2.4x=0.365(x-3.1)=15.5再问四道题(脱式计算)100×0.83+83×994.7×63+3.7

再问四道题(脱式计算) 100×0.83+83×99 4.7×63+3.7×47 3.6x + 2.4 x =0.36 5(x-3.1)=15.5再问四道题(脱式计算)100×0.83+83×99 4.7×63+3.7×473.6x + 2.4 x =0.36 5(x-3.1)=15.5
再问四道题(脱式计算) 100×0.83+83×99 4.7×63+3.7×47 3.6x + 2.4 x =0.36 5(x-3.1)=15.5
再问四道题(脱式计算)
100×0.83+83×99 4.7×63+3.7×47
3.6x + 2.4 x =0.36 5(x-3.1)=15.5

再问四道题(脱式计算) 100×0.83+83×99 4.7×63+3.7×47 3.6x + 2.4 x =0.36 5(x-3.1)=15.5再问四道题(脱式计算)100×0.83+83×99 4.7×63+3.7×473.6x + 2.4 x =0.36 5(x-3.1)=15.5
100×0.83+83×99
=100×0.83+83×(100-1)
=100×0.83+83×100-83×1
=83+8300-83
=8300