The children are already learning to multiply and divide.

孩子们已经开始学习乘法和除法了。

《牛津词典》

His son is learning to multiply and divide.

他儿子正在学习乘法和除法。

youdao

By the end of fifth grade, they should be able to multiply and divide.

在五年级结束，他们应该能做乘除法。

youdao

So, the number of nuclei, 119 if we were to sit and count these as well, is 119. So, we'll multiply that by just pi, r squared, to get that cross-section, and divide all of that by 1 . 39 meters squared.

如果你们数的话，原子核的数是，我们用它乘以πr的平方，得到横截面积，除以1。39平方米。

麻省理工公开课 - 化学原理课程节选

The draft primary curriculum for maths, due to be introduced in schools next year, contains plans for pupils to memorise their times tables up to 12 by age nine, multiply and divide fractions by age 11, as well as learn topics such as geometry, long division and multiplication and decimals.

BBC: Primary maths plan threatens 'too much too soon'