51(0.5+25.5)/2=663
0.5+1+1.5+2.5+3+……+25.5=?
7个回答
相关问题
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1+(1*0.5)=1.5 1.5+(1.5*0.5)=2.25 2.25+(2.25*0.5)=3.375.以此类推.
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1.(5.75-4.75)/[2.5+(0.75*1.25*8) 2.(6.9*3.6*3.5)/(1.25/0.25)
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-﹙﹣4.5﹚÷﹙1/2-0.25﹚²-3.5÷│﹣0.25│²=
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(1) 1/4√256+√0.25 (2) 2√2+3√5-3√2-3√5 (3) √(﹣2/5)²-√1-(
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(1)-6-[3/25-(-4/5)^2]*(-5)^3 (2)-0.25除以(-1/2)^3+(1/8-1/2)*(-
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matlab能手进~t=[0.25 0.5 0.75 1 1.5 2 2.5 3 3.5 4 4.5 5 6 7 8 9
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计算(1)[3/2−54+154]-0.25-3.75-4.5(2)(-5.2)+3.8-{(-1.2)-[(-0.5)
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3.5×1.25+1.25+3.5÷0.8
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口算:(1)0.1×0.1=(2)0.24×0.5=(3)5.4+3.6=(4)1.25-0.25=(5)6.45×0.