答:1x2451等于2451,10x245.1等于2451,100Ⅹ24.51等于2451,1000x2.451等于2451,10000x0.2451等于2451,0.1ⅹ24510等于2451,0.01乘245100等于2451,0.001乘2451000等于2451,0.0001乘24510000等于2451,0.00001乘245100000等于2451。友人们!我说得对吧!