0.18x8.45乘法验算,0.39　2.9怎么验算用乘法,0.072　0.15竖式计算并验算,0.18x8.45验算,0.18x8.45的验算,0.18x8.45竖式验算,0.18x8.45的竖式和验算怎么写,0.18乘8.45竖式验算,0.18x8.45先计算再验算,0.072x0.15验算,0.18x8.45怎么算,0.18x8.45竖式计算验镇一,5.2x0.18的验算