小姑娘数学课本第六单元的内容是学习克和千克。一天，克和千克斗起嘴来了，千克对克说：“你看我比你大这么多，像你这么小的单位能比上我吗？”克不服气地说：“我可以变成比你大和比你小的数，还可以变成和你一样的数呢，当然是我比你厉害！”它们谁也说服不了对方，吵得面红耳赤。
Unit 6 of the little girl's math textbook is to learn grams and kilograms. One day, gram and kilogram began to fight. Kilogram said to gram, "look, I'm so much bigger than you. Can a small unit like you compare with me?" "I can become a number larger and smaller than you, and I can also become a number like you, of course, I am more powerful than you!" said Ke They can't persuade each other. They quarrel red in the face.
就这样一天，两天，三天，它们吵个不停，可始终没有结果。它们来到小女孩的桌子上，看见小女孩在作业本上写数学等式：１千克＝1000克，它们都呆住了，原来是这样的啊。原来它们谁也离不开谁，谁也不会比谁更强一些，应该是平等的。它们觉得又害羞又惭愧，不约而同的说：“对不起，我错了。”
On such a day, two days, three days, they quarreled incessantly, but there was no result. When they came to the little girl's desk, they saw the little girl write the math equation in her homework book: 1kg = 1000g, and they all froze, so it was. It turns out that no one can be separated from them and no one can be stronger than them. They should be equal. They feel shy and ashamed. They all say, "I'm sorry, I'm wrong."
从此克和千克成了一对好朋友，一起玩耍，一起唱歌跳舞，可开心了。
From then on, Ke and kg became a good friend, playing together, singing and dancing together, which made them happy.