subtraction的例句（subtraction在句子中的用法）

• The plus sign is used in addition and the minus is used in subtraction. 加号用于加法;减号用于减法.
• The difference is found by subtraction. 用减法得出差额.
• I looked at what he'd given me and did a quick subtraction. 我看着他给我的东西，快速做了个减法。
• There will be simple tests in addition, subtraction, multiplication and division. 会有对加、减、乘、除运算的简单测试。
• ...using concrete objects to teach addition and subtraction. 用实物来教加减法
• ...simple addition and subtraction problems. 简单的加减题