One of the highlights was a 4th grade math class on fractions, including the concepts of denominator and the numerator.

其中一个亮点就是在一节四年级数学课上教授分数，包括分母和分子的概念。

So let me get the calculator out, and we have-- I'll do the numerator first.

所以让我拿出计算器，然后我们——我先算分子。

We want it with the hours on the top, on the numerator.

我们希望它的小时数在顶部，在分子上。

So, again, we're talking about fractions - this is the numerator; this is the denominator.

所以，我们再次谈论分数——这是分子； 这是分母。

Is concerning the other element in the numerator basis Rule.

是关于分子基法则中的其他元素。

How about this for the app name? The Surprisingly Helpful Equation-Linked Differential Optimized Numerator.

应用程序叫这名儿怎样 出奇-好用-微分-方程-相关 优化-计算器。

Now, to simplify it, we can multiply both the numerator and the denominator by the mean of the x's.

现在，为了简化它，我们可以将分子和分母都乘以 x 的平均值。

You're just multiplying the numerator and denominator by negative 1, which is same thing as multiplying the whole thing by 1.

您只是将分子和分母乘以负数 1，这与将整个事物乘以 1 是一样的。

The numerator over here is a 0.08.

这里的分子是 0.08。

And you could view it as really the numerator when you calculate variance.

当你计算方差时，你可以把它看作真正的分子。