2/51+4/51+6/51+...50/51-1/51-3/51-...-49/51=(2/51-1/51)+(4/51-3/51)+……+(50/51-49/51)=25*1/51=25/51
2/51+4/51+6/51+...50/51-1/51-3/51-...-49/51
3个回答
相关问题
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4/51+6/51+8/51+10/51+12/51+14/51+16/51怎么写乘法算式
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(1-18\51)+(3-18\51*2)+(5-18\518*3)+.+(97-18\51*49)+(99-18\51
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分数的简便运算:(1+1/51)+(3+3/51)+(5+5/51)+(7+7/51)+.+(97+97/51)+(99
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计算:3.51×49+35.1×5.1+49×51=______.
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用简便方法计算51*49+3.51*49+5.1*35.1
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计算:3.51×49+35.1×5.1+49×51=______.
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48 49 50 51
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下面数的总和是多少?0 1 2.49 1 2 3.50 2 3 4.51 .49 50 51.98
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51×51×51×0.3÷360
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97×51+51+51×2怎么简算