Variable, is a letter that represents a number or quantity whose value may change, Constant, is a number whose value always stays the same, Expression, is a number, a variable, or a combination of numbers and variables and operation symbols, Equation, is made up of two expressions connected by an equal sign, Addition, a plus b, Subtraction, a minus b, Multiplication, a • b, (a)(b), (a)b, a(b), Division, a ÷ b, a / b, ab, a ≠ b, a is not equal to b, Exponent, tells us how many factors of the base we have to multiply

排行榜

我们目前正在努力改进排行榜功能。请通过提供您的反馈来帮助我们。

提供反馈

视觉风格

选项

我们目前正在改进活动设置。请通过反馈帮助我们。

提供反馈

切换模板

恢复自动保存:?