计数,加法与乘法 --- 介绍 ---

请注意: WIMS 的网页是交互式的: 它们不是通常的 HTML 文件. 只能在线交互地 使用. 您用自动化程序收集的网页是无用的.

• Description: 各种东西相加或相乘. This is the main site of WIMS (WWW Interactive Multipurpose Server): interactive exercises, online calculators and plotters, mathematical recreation and games
• Keywords: wims, mathematics, mathematical, math, maths, interactive mathematics, interactive math, interactive maths, mathematic, online, calculator, graphing, exercise, exercice, puzzle, calculus, K-12, algebra, math閙atique, interactive, interactive mathematics, interactive mathematical, interactive math, interactive maths, mathematical education, enseignement math閙atique, mathematics teaching, teaching mathematics, algebra, geometry, calculus, function, curve, surface, graphing, virtual class, virtual classes, virtual classroom, virtual classrooms, interactive documents, interactive document, number,arithmetic, calculation,addition,multiplication,division,number