This problem also includes simple addition and subtraction operations.

这道题同时也包含简单的加减法运算。

Subtraction is a binary operation in mathematics.

减法是数学中的一种二元运算。

The content of this lesson is to learn subtraction.

本节课的内容是学习减法。

The test involves simple calculations, such as addition and subtraction.

测试涉及简单的计算 如加法和减法

She's ready to learn simple addition and subtraction.

她准备学习简单的加法和减法。

There will be simple tests in addition, subtraction, multiplication, and division.

将会有加减乘除的简单测试。

We can use the magic of subtraction.

我们可以利用减法的魔力。

This service is a simple math calculation service, providing addition and subtraction operations.

该服务是一个简单的数学计算服务，提供了加法和减法运算。

Bees are capable of addition and subtraction — using colors in the place of plus and minus symbols.

蜜蜂会做加减法——它们用颜色来代替加号和减号。