同类量不同单位名称的名数互化,是同学们感到困难的地方。这里向同学们介绍名数间互化的一种绝招——四字诀。—看:就是看是高级单位的名数化成低级单位的名数,还是低级单位的名数化成高级单位的名数。二辨:辨清是用乘法,还是用除法。三想:就是想两个单位之间的进率是多少。四化:就是按照下面格式进行互化。 Mutual differences in the names of different units of the same quantity, is where students feel difficult. Described here to the students a name for each other a trick - four tactics. - See: It is to see is the number of high-level units into the name of low-level units, or the number of lower-level units into the name of advanced units. Two discrimination: identify whether to use multiplication, or division. Three think: that is, how much is the rate of progress between the two units. Four: that is, in accordance with the following format for each other.