这小女孩已在学做加减法了。

The little girl has begun to learn to add and subtract.

youdao

做加减法，露西不成问题，可分数却难倒了她。

Lucy knows how to add and substract but fractions have her up a stump.

youdao

我还会教他做数学的加减法。

I will teach him additions and subtractions in math.

youdao

我还会教他做数学的加减法。

I will teach him additions and subtractions in math.

youdao