一天,爸爸买了一小筐柑橘,妈妈洗了9个放在水果盘上。我一看到又大又黄的柑橘,口水都快要流下来了,立刻嚷着要吃。妈妈微笑着问我:“不能全都给你吃哟,爸爸吃3个,妈妈吃2个,这样就少了几个?”我不假思索地回答:“爸爸吃掉3个,还剩9-3=5(个),妈妈再吃掉2个,还剩5-2=3(个)。” One day, my father bought a small basket of citrus, my mother washed nine on the fruit plate. As soon as I saw the big, yellow citrus, my saliva was about to flow down and cried immediately to eat. Mom smiled and asked me: “can not give you all to eat yo, dad eat 3, mom eat 2, so a few? ” I answer without hesitation: “dad eats 3, left 9 -3 = 5 (one), mom eat two more, leaving 5-2 = 3 (a). ”