熱心網(wǎng)友

0.5÷0.5×0.5÷0.5÷0.5=2

熱心網(wǎng)友

(0.5 ×0.5) ÷(0.5 ×0.5) ÷0.5=2

熱心網(wǎng)友

( 0.5－0.5+ 0.5 +0.5)÷ 0.5=2